Symfony Profiler

Security

Token

There is no security token.

Firewall

main Name

Security enabled

Stateless

Configuration

Key	Value
provider	security.user.provider.concrete.app_user_provider
context	main
entry_point	App\Security\KbinAuthenticator
user_checker	App\Security\UserChecker
access_denied_handler	(none)
access_denied_url	(none)
authenticators	[`"two_factor" "remember_me" "App\Security\KbinAuthenticator" "App\Security\FacebookAuthenticator" "App\Security\GoogleAuthenticator" "App\Security\GithubAuthenticator" "App\Security\KeycloakAuthenticator"`]

Listeners

Listener	Duration	Response
Symfony\Component\Security\Http\Firewall\ChannelListener {#723`-map: Symfony\Component\Security\Http\AccessMap {#722 …} -logger: Monolog\Logger {#783 …} -httpPort: 80 -httpsPort: 443`}	0.00 ms	(none)
Symfony\Component\Security\Http\Firewall\ContextListener {#706-tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage {#1017 …} -sessionKey: "_security_main" -logger: Monolog\Logger {#783 …} -userProviders: Symfony\Component\DependencyInjection\Argument\RewindableGenerator {#705 …} -dispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …} -registered: false -trustResolver: Scheb\TwoFactorBundle\Security\Authentication\AuthenticationTrustResolver {#780 …} -sessionTrackerEnabler: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage::enableUsageTracking(): void {#703 …}}	62.98 ms	(none)
Symfony\Component\Security\Http\Firewall\AuthenticatorManagerListener {#584`-authenticatorManager: Symfony\Component\Security\Http\Authentication\AuthenticatorManager {#595 …}`}	0.00 ms	(none)
Scheb\TwoFactorBundle\Security\Http\Firewall\TwoFactorAccessListener {#582`-twoFactorFirewallConfig: Scheb\TwoFactorBundle\Security\TwoFactor\TwoFactorFirewallConfig {#842 …} -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …} -twoFactorAccessDecider: Scheb\TwoFactorBundle\Security\Authorization\TwoFactorAccessDecider {#581 …}`}	0.06 ms	(none)
Symfony\Component\Security\Http\Firewall\AccessListener {#579`-tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …} -accessDecisionManager: Symfony\Component\Security\Core\Authorization\TraceableAccessDecisionManager {#937 …} -map: Symfony\Component\Security\Http\AccessMap {#722 …}`}	0.00 ms	(none)
Symfony\Component\Security\Http\Firewall\LogoutListener {#786`-tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …} -options: [ "csrf_parameter" => "_csrf_token" "csrf_token_id" => "logout" "logout_path" => "app_logout" ] -httpUtils: Symfony\Component\Security\Http\HttpUtils {#841 …} -csrfTokenManager: Symfony\Component\Security\Csrf\CsrfTokenManager {#1015 …} -eventDispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}`}	0.00 ms	(none)

Authenticators

No authenticators have been recorded. Check previous profiles on your authentication endpoint.

Access Decision

affirmative Strategy


"Symfony\Component\Security\Core\Authorization\Voter\AuthenticatedVoter"
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
"Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter"
"App\Security\Voter\EntryCommentVoter"
"App\Security\Voter\EntryVoter"
"App\Security\Voter\MagazineVoter"
"App\Security\Voter\MessageThreadVoter"
"App\Security\Voter\MessageVoter"
"App\Security\Voter\NotificationVoter"
"App\Security\Voter\OAuth2UserConsentVoter"
"App\Security\Voter\PostCommentVoter"
"App\Security\Voter\PostVoter"
"App\Security\Voter\UserVoter"

#	Voter class
1	"Symfony\Component\Security\Core\Authorization\Voter\AuthenticatedVoter"
2	"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
3	"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
4	"Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter"
5	"App\Security\Voter\EntryCommentVoter"
6	"App\Security\Voter\EntryVoter"
7	"App\Security\Voter\MagazineVoter"
8	"App\Security\Voter\MessageThreadVoter"
9	"App\Security\Voter\MessageVoter"
10	"App\Security\Voter\NotificationVoter"
11	"App\Security\Voter\OAuth2UserConsentVoter"
12	"App\Security\Voter\PostCommentVoter"
13	"App\Security\Voter\PostVoter"
14	"App\Security\Voter\UserVoter"

Access decision log


null
"App\Security\Voter\UserVoter"
App\Entity\Entry {#2480
  +user: Proxies\__CG__\App\Entity\User {#1966 …}
  +magazine: App\Entity\Magazine {#263
    +icon: Proxies\__CG__\App\Entity\Image {#244 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
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    +apPreferredUsername: "linux"
    +apDiscoverable: true
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      date: 2024-10-22 09:53:16.0 +02:00
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      date: 2023-11-02 13:51:08.0 +01:00
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  +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
  +slug: "Is-there-such-a-thing-as-split-screen-grep"
  +title: "Is there such a thing as split-screen grep?"
  +url: null
  +body: """
    I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
    \n
    Is this possible today? What tools would you recommend to accomplish this?\n
    \n
    EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
    \n
    In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
    \n
    ```\n
    \n
    <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
    </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
    </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
    </span>\n
    ```
    """
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  +downVotes: 0
  +ranking: 1704218040
  +visibility: "visible             "
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  +editedAt: DateTimeImmutable @1710501214 {#1816
    date: 2024-03-15 12:13:34.0 +01:00
  }
  +createdAt: DateTimeImmutable @1704131640 {#2419
    date: 2024-01-01 18:54:00.0 +01:00
  }
}
"App\Security\Voter\UserVoter"
App\Entity\Entry {#2480
  +user: Proxies\__CG__\App\Entity\User {#1966 …}
  +magazine: App\Entity\Magazine {#263
    +icon: Proxies\__CG__\App\Entity\Image {#244 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
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    +subscriptionsCount: 1
    +entryCount: 1406
    +entryCommentCount: 28632
    +postCount: 6
    +postCommentCount: 214
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      date: 2024-10-22 09:52:22.0 +02:00
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      date: 2024-10-22 09:53:16.0 +02:00
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      date: 2023-11-02 13:51:08.0 +01:00
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  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
  +slug: "Is-there-such-a-thing-as-split-screen-grep"
  +title: "Is there such a thing as split-screen grep?"
  +url: null
  +body: """
    I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
    \n
    Is this possible today? What tools would you recommend to accomplish this?\n
    \n
    EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
    \n
    In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
    \n
    ```\n
    \n
    <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
    </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
    </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
    </span>\n
    ```
    """
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  +lang: "en"
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  +commentCount: 21
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  +editedAt: DateTimeImmutable @1710501214 {#1816
    date: 2024-03-15 12:13:34.0 +01:00
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  +createdAt: DateTimeImmutable @1704131640 {#2419
    date: 2024-01-01 18:54:00.0 +01:00
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}
"App\Security\Voter\UserVoter"
App\Entity\Entry {#2480
  +user: Proxies\__CG__\App\Entity\User {#1966 …}
  +magazine: App\Entity\Magazine {#263
    +icon: Proxies\__CG__\App\Entity\Image {#244 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
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      date: 2023-11-02 13:51:08.0 +01:00
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  +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
  +slug: "Is-there-such-a-thing-as-split-screen-grep"
  +title: "Is there such a thing as split-screen grep?"
  +url: null
  +body: """
    I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
    \n
    Is this possible today? What tools would you recommend to accomplish this?\n
    \n
    EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
    \n
    In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
    \n
    ```\n
    \n
    <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
    </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
    </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
    </span>\n
    ```
    """
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        \n
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        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
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        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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  +image: null
  +parent: null
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    Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
    \n
    - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
    - on the right, run `tail -f error.log`\n
    \n
    The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
    \n
    Rather than using a file for error.log you could also use a named pipe in much the same way.
    """
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-01-01 18:54:00.0 +01:00
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  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
    \n
    - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
    - on the right, run `tail -f error.log`\n
    \n
    The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
    \n
    Rather than using a file for error.log you could also use a named pipe in much the same way.
    """
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        \n
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        - No misinformation\n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
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      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
    \n
    - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
    - on the right, run `tail -f error.log`\n
    \n
    The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
    \n
    Rather than using a file for error.log you could also use a named pipe in much the same way.
    """
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
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        \n
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        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +url: null
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
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      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
    +image: null
    +parent: null
    +root: null
    +body: """
      Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
      \n
      - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
      - on the right, run `tail -f error.log`\n
      \n
      The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
      \n
      Rather than using a file for error.log you could also use a named pipe in much the same way.
      """
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  +body: "Thanks! I’m curious if there is a way to do this as a one-liner?"
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"App\Security\Voter\UserVoter"
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        \n
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        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
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        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
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        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +magazine: App\Entity\Magazine {#263}
    +image: null
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      Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
      \n
      - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
      - on the right, run `tail -f error.log`\n
      \n
      The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
      \n
      Rather than using a file for error.log you could also use a named pipe in much the same way.
      """
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"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4640
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
      \n
      - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
      - on the right, run `tail -f error.log`\n
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      \n
      Rather than using a file for error.log you could also use a named pipe in much the same way.
      """
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"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4695
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2023-11-02 13:51:08.0 +01:00
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    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4640
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
    +image: null
    +parent: App\Entity\EntryComment {#4033
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      +entry: App\Entity\Entry {#2480}
      +magazine: App\Entity\Magazine {#263}
      +image: null
      +parent: null
      +root: null
      +body: """
        Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
        \n
        - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
        - on the right, run `tail -f error.log`\n
        \n
        The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
        \n
        Rather than using a file for error.log you could also use a named pipe in much the same way.
        """
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    }
    +root: App\Entity\EntryComment {#4033}
    +body: "Thanks! I’m curious if there is a way to do this as a one-liner?"
    +lang: "en"
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  +root: App\Entity\EntryComment {#4033}
  +body: """
    Sorry for th slow answer, I’ve been away. There is a way, if it’s still useful to you:\n
    \n
    First, create a named fifo, you only need to do this once:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">mkfifo logview\n
    </span>\n
    ```\n
    \n
    Run your rsync in one pane, with a filtered view in the second:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">tmux new 'rsync ...options... |& tee logview' ; split-window -h 'grep "denied" logview'\n
    </span>\n
    ```\n
    \n
    Replace `…options…` with your normal rsync command line.\n
    \n
    That should give you a split view, with all the normal messages on the left, and only messages containing ‘denied’ on the right.\n
    \n
    The `|&` makes sure we capture both stdout and stderr, `tee` then writes them to the fifo and displays them. `split-window` tells tmux to create a second pane, and display the output of grep.
    """
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4695
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +downVotes: 0
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    +visibility: "visible             "
    +apId: "https://lemmy.ca/post/12450133"
    +editedAt: DateTimeImmutable @1710501214 {#1816
      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4640
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
    +image: null
    +parent: App\Entity\EntryComment {#4033
      +user: App\Entity\User {#3981 …}
      +entry: App\Entity\Entry {#2480}
      +magazine: App\Entity\Magazine {#263}
      +image: null
      +parent: null
      +root: null
      +body: """
        Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
        \n
        - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
        - on the right, run `tail -f error.log`\n
        \n
        The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
        \n
        Rather than using a file for error.log you could also use a named pipe in much the same way.
        """
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        date: 2024-06-25 00:10:28.0 +02:00
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        date: 2024-01-02 00:01:52.0 +01:00
      }
    }
    +root: App\Entity\EntryComment {#4033}
    +body: "Thanks! I’m curious if there is a way to do this as a one-liner?"
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      date: 2024-01-02 03:51:29.0 +01:00
    }
  }
  +root: App\Entity\EntryComment {#4033}
  +body: """
    Sorry for th slow answer, I’ve been away. There is a way, if it’s still useful to you:\n
    \n
    First, create a named fifo, you only need to do this once:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">mkfifo logview\n
    </span>\n
    ```\n
    \n
    Run your rsync in one pane, with a filtered view in the second:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">tmux new 'rsync ...options... |& tee logview' ; split-window -h 'grep "denied" logview'\n
    </span>\n
    ```\n
    \n
    Replace `…options…` with your normal rsync command line.\n
    \n
    That should give you a split view, with all the normal messages on the left, and only messages containing ‘denied’ on the right.\n
    \n
    The `|&` makes sure we capture both stdout and stderr, `tee` then writes them to the fifo and displays them. `split-window` tells tmux to create a second pane, and display the output of grep.
    """
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    date: 2024-01-09 01:36:40.0 +01:00
  }
}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4695
  +user: App\Entity\User {#3981 …}
  +entry: App\Entity\Entry {#2480
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2024-10-22 09:52:22.0 +02:00
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      +apPreferredUsername: "linux"
      +apDiscoverable: true
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        date: 2024-10-22 09:53:16.0 +02:00
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        date: 2023-11-02 13:51:08.0 +01:00
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    }
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +editedAt: DateTimeImmutable @1710501214 {#1816
      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4640
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
    +image: null
    +parent: App\Entity\EntryComment {#4033
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      +entry: App\Entity\Entry {#2480}
      +magazine: App\Entity\Magazine {#263}
      +image: null
      +parent: null
      +root: null
      +body: """
        Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
        \n
        - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
        - on the right, run `tail -f error.log`\n
        \n
        The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
        \n
        Rather than using a file for error.log you could also use a named pipe in much the same way.
        """
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        "@canadaduane@lemmy.ca"
      ]
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        date: 2024-01-02 00:01:52.0 +01:00
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    }
    +root: App\Entity\EntryComment {#4033}
    +body: "Thanks! I’m curious if there is a way to do this as a one-liner?"
    +lang: "en"
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      "@canadaduane@lemmy.ca"
      "@notabot@lemm.ee"
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    +nested: Doctrine\ORM\PersistentCollection {#4643 …}
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    +reports: Doctrine\ORM\PersistentCollection {#4647 …}
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    -id: 272134
    -bodyTs: "'curious':4 'liner':17 'm':3 'one':16 'one-lin':15 'thank':1 'way':9"
    +ranking: 0
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    +downVotes: 0
    +visibility: "visible             "
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    +editedAt: null
    +createdAt: DateTimeImmutable @1704163889 {#4639
      date: 2024-01-02 03:51:29.0 +01:00
    }
  }
  +root: App\Entity\EntryComment {#4033}
  +body: """
    Sorry for th slow answer, I’ve been away. There is a way, if it’s still useful to you:\n
    \n
    First, create a named fifo, you only need to do this once:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">mkfifo logview\n
    </span>\n
    ```\n
    \n
    Run your rsync in one pane, with a filtered view in the second:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">tmux new 'rsync ...options... |& tee logview' ; split-window -h 'grep "denied" logview'\n
    </span>\n
    ```\n
    \n
    Replace `…options…` with your normal rsync command line.\n
    \n
    That should give you a split view, with all the normal messages on the left, and only messages containing ‘denied’ on the right.\n
    \n
    The `|&` makes sure we capture both stdout and stderr, `tee` then writes them to the fifo and displays them. `split-window` tells tmux to create a second pane, and display the output of grep.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 1
  +score: 0
  +lastActive: DateTime @1704760600 {#4693
    date: 2024-01-09 01:36:40.0 +01:00
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  +ip: null
  +tags: [
    "323232"
  ]
  +mentions: [
    "@canadaduane@lemmy.ca"
    "@notabot@lemm.ee"
  ]
  +children: Doctrine\ORM\PersistentCollection {#4696 …}
  +nested: Doctrine\ORM\PersistentCollection {#4698 …}
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"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-03-15 12:13:34.0 +01:00
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      date: 2024-01-01 18:54:00.0 +01:00
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  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4695
    +user: App\Entity\User {#3981 …}
    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
    +image: null
    +parent: App\Entity\EntryComment {#4640
      +user: Proxies\__CG__\App\Entity\User {#1966 …}
      +entry: App\Entity\Entry {#2480}
      +magazine: App\Entity\Magazine {#263}
      +image: null
      +parent: App\Entity\EntryComment {#4033
        +user: App\Entity\User {#3981 …}
        +entry: App\Entity\Entry {#2480}
        +magazine: App\Entity\Magazine {#263}
        +image: null
        +parent: null
        +root: null
        +body: """
          Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
          \n
          - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
          - on the right, run `tail -f error.log`\n
          \n
          The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
          \n
          Rather than using a file for error.log you could also use a named pipe in much the same way.
          """
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        ]
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          date: 2024-01-02 00:01:52.0 +01:00
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      }
      +root: App\Entity\EntryComment {#4033}
      +body: "Thanks! I’m curious if there is a way to do this as a one-liner?"
      +lang: "en"
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        "@notabot@lemm.ee"
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    }
    +root: App\Entity\EntryComment {#4033}
    +body: """
      Sorry for th slow answer, I’ve been away. There is a way, if it’s still useful to you:\n
      \n
      First, create a named fifo, you only need to do this once:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">mkfifo logview\n
      </span>\n
      ```\n
      \n
      Run your rsync in one pane, with a filtered view in the second:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">tmux new 'rsync ...options... |& tee logview' ; split-window -h 'grep "denied" logview'\n
      </span>\n
      ```\n
      \n
      Replace `…options…` with your normal rsync command line.\n
      \n
      That should give you a split view, with all the normal messages on the left, and only messages containing ‘denied’ on the right.\n
      \n
      The `|&` makes sure we capture both stdout and stderr, `tee` then writes them to the fifo and displays them. `split-window` tells tmux to create a second pane, and display the output of grep.
      """
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    +isAdult: false
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      "323232"
    ]
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      "@canadaduane@lemmy.ca"
      "@notabot@lemm.ee"
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  +body: "Thanks!"
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4747
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      +title: "linux"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-03-15 12:13:34.0 +01:00
    }
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      date: 2024-01-01 18:54:00.0 +01:00
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  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4695
    +user: App\Entity\User {#3981 …}
    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
    +image: null
    +parent: App\Entity\EntryComment {#4640
      +user: Proxies\__CG__\App\Entity\User {#1966 …}
      +entry: App\Entity\Entry {#2480}
      +magazine: App\Entity\Magazine {#263}
      +image: null
      +parent: App\Entity\EntryComment {#4033
        +user: App\Entity\User {#3981 …}
        +entry: App\Entity\Entry {#2480}
        +magazine: App\Entity\Magazine {#263}
        +image: null
        +parent: null
        +root: null
        +body: """
          Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
          \n
          - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
          - on the right, run `tail -f error.log`\n
          \n
          The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
          \n
          Rather than using a file for error.log you could also use a named pipe in much the same way.
          """
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          date: 2024-01-02 00:01:52.0 +01:00
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      +body: "Thanks! I’m curious if there is a way to do this as a one-liner?"
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    +root: App\Entity\EntryComment {#4033}
    +body: """
      Sorry for th slow answer, I’ve been away. There is a way, if it’s still useful to you:\n
      \n
      First, create a named fifo, you only need to do this once:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">mkfifo logview\n
      </span>\n
      ```\n
      \n
      Run your rsync in one pane, with a filtered view in the second:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">tmux new 'rsync ...options... |& tee logview' ; split-window -h 'grep "denied" logview'\n
      </span>\n
      ```\n
      \n
      Replace `…options…` with your normal rsync command line.\n
      \n
      That should give you a split view, with all the normal messages on the left, and only messages containing ‘denied’ on the right.\n
      \n
      The `|&` makes sure we capture both stdout and stderr, `tee` then writes them to the fifo and displays them. `split-window` tells tmux to create a second pane, and display the output of grep.
      """
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      date: 2024-01-09 01:36:40.0 +01:00
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  +body: "Thanks!"
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    date: 2024-01-09 06:45:47.0 +01:00
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4747
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    +user: Proxies\__CG__\App\Entity\User {#1966 …}
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      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2023-11-02 13:51:08.0 +01:00
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    }
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4695
    +user: App\Entity\User {#3981 …}
    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
    +image: null
    +parent: App\Entity\EntryComment {#4640
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      +entry: App\Entity\Entry {#2480}
      +magazine: App\Entity\Magazine {#263}
      +image: null
      +parent: App\Entity\EntryComment {#4033
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        +entry: App\Entity\Entry {#2480}
        +magazine: App\Entity\Magazine {#263}
        +image: null
        +parent: null
        +root: null
        +body: """
          Tmux is a very helpful terminal multiplexer, meaning it can split your terminal into multiple panes. So, create two side by side panes, then one way of doing it is:\n
          \n
          - on the left, run `your cmd | tee >(grep ‘denied’ > error.log)`\n
          - on the right, run `tail -f error.log`\n
          \n
          The `tee` process takes it’s standard in, and writes itbto both standard out, so you see all the lines, and the path it’s been given. The `>(…)` operator runs the grep in a subprocess, and returns the path to it’s standard input pipe, so `grep` receives every line, and writes the denied lines to a log file which you display with `tail` in the other pane.\n
          \n
          Rather than using a file for error.log you could also use a named pipe in much the same way.
          """
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          "@canadaduane@lemmy.ca"
        ]
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          date: 2024-01-02 00:01:52.0 +01:00
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      }
      +root: App\Entity\EntryComment {#4033}
      +body: "Thanks! I’m curious if there is a way to do this as a one-liner?"
      +lang: "en"
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        "@canadaduane@lemmy.ca"
        "@notabot@lemm.ee"
      ]
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      -id: 272134
      -bodyTs: "'curious':4 'liner':17 'm':3 'one':16 'one-lin':15 'thank':1 'way':9"
      +ranking: 0
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      +downVotes: 0
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      +createdAt: DateTimeImmutable @1704163889 {#4639
        date: 2024-01-02 03:51:29.0 +01:00
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    }
    +root: App\Entity\EntryComment {#4033}
    +body: """
      Sorry for th slow answer, I’ve been away. There is a way, if it’s still useful to you:\n
      \n
      First, create a named fifo, you only need to do this once:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">mkfifo logview\n
      </span>\n
      ```\n
      \n
      Run your rsync in one pane, with a filtered view in the second:\n
      \n
      ```\n
      \n
      <span style="color:#323232;">tmux new 'rsync ...options... |& tee logview' ; split-window -h 'grep "denied" logview'\n
      </span>\n
      ```\n
      \n
      Replace `…options…` with your normal rsync command line.\n
      \n
      That should give you a split view, with all the normal messages on the left, and only messages containing ‘denied’ on the right.\n
      \n
      The `|&` makes sure we capture both stdout and stderr, `tee` then writes them to the fifo and displays them. `split-window` tells tmux to create a second pane, and display the output of grep.
      """
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        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
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        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    ChatGPT suggests the following:\n
    \n
    1. Run tmux\n
    2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
    3. Ctrl+B % # splits screen vertically\n
    4. Ctrl+B right-arrow-key # moves to right split\n
    5. `tail -f /tmp/rsync_output.txt | grep denied`\n
    \n
    Not quite a one-liner, but I can see how tmux is a big help here.
    """
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"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    ChatGPT suggests the following:\n
    \n
    1. Run tmux\n
    2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
    3. Ctrl+B % # splits screen vertically\n
    4. Ctrl+B right-arrow-key # moves to right split\n
    5. `tail -f /tmp/rsync_output.txt | grep denied`\n
    \n
    Not quite a one-liner, but I can see how tmux is a big help here.
    """
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"App\Security\Voter\UserVoter"
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        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
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        \n
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        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2023-11-02 13:51:08.0 +01:00
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    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-01-01 18:54:00.0 +01:00
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  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    ChatGPT suggests the following:\n
    \n
    1. Run tmux\n
    2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
    3. Ctrl+B % # splits screen vertically\n
    4. Ctrl+B right-arrow-key # moves to right split\n
    5. `tail -f /tmp/rsync_output.txt | grep denied`\n
    \n
    Not quite a one-liner, but I can see how tmux is a big help here.
    """
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4564
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      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      +awards: Doctrine\ORM\PersistentCollection {#1830 …}
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        date: 2023-11-02 13:51:08.0 +01:00
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    }
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +downVotes: 0
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    +visibility: "visible             "
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    +editedAt: DateTimeImmutable @1710501214 {#1816
      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4065
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
    +image: null
    +parent: null
    +root: null
    +body: """
      ChatGPT suggests the following:\n
      \n
      1. Run tmux\n
      2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
      3. Ctrl+B % # splits screen vertically\n
      4. Ctrl+B right-arrow-key # moves to right split\n
      5. `tail -f /tmp/rsync_output.txt | grep denied`\n
      \n
      Not quite a one-liner, but I can see how tmux is a big help here.
      """
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    +isAdult: false
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      "@canadaduane@lemmy.ca"
    ]
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      date: 2024-01-01 19:08:48.0 +01:00
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  }
  +root: App\Entity\EntryComment {#4065}
  +body: "I know this isn’t an answer you’re looking for, but I’ll at least say that I find tmux to be infinitely useful and highly recommend checking it out"
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    date: 2024-01-01 19:56:49.0 +01:00
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4564
  +user: Proxies\__CG__\App\Entity\User {#4558 …}
  +entry: App\Entity\Entry {#2480
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
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        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
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      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
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      ChatGPT suggests the following:\n
      \n
      1. Run tmux\n
      2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
      3. Ctrl+B % # splits screen vertically\n
      4. Ctrl+B right-arrow-key # moves to right split\n
      5. `tail -f /tmp/rsync_output.txt | grep denied`\n
      \n
      Not quite a one-liner, but I can see how tmux is a big help here.
      """
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"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4564
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      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +image: null
    +parent: null
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      ChatGPT suggests the following:\n
      \n
      1. Run tmux\n
      2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
      3. Ctrl+B % # splits screen vertically\n
      4. Ctrl+B right-arrow-key # moves to right split\n
      5. `tail -f /tmp/rsync_output.txt | grep denied`\n
      \n
      Not quite a one-liner, but I can see how tmux is a big help here.
      """
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4576
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        \n
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        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
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        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
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      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
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      ChatGPT suggests the following:\n
      \n
      1. Run tmux\n
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      3. Ctrl+B % # splits screen vertically\n
      4. Ctrl+B right-arrow-key # moves to right split\n
      5. `tail -f /tmp/rsync_output.txt | grep denied`\n
      \n
      Not quite a one-liner, but I can see how tmux is a big help here.
      """
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  +body: "Tmux is also good for long operations, as tmux is running as a server and you can close the terminal while tmux chugs away. Others can also connect to the tmux session through ssh and share screens."
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"App\Security\Voter\UserVoter"
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      +title: "linux"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      ChatGPT suggests the following:\n
      \n
      1. Run tmux\n
      2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
      3. Ctrl+B % # splits screen vertically\n
      4. Ctrl+B right-arrow-key # moves to right split\n
      5. `tail -f /tmp/rsync_output.txt | grep denied`\n
      \n
      Not quite a one-liner, but I can see how tmux is a big help here.
      """
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  +root: App\Entity\EntryComment {#4065}
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"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2023-11-02 13:51:08.0 +01:00
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    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  +parent: App\Entity\EntryComment {#4065
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    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
    +image: null
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      ChatGPT suggests the following:\n
      \n
      1. Run tmux\n
      2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
      3. Ctrl+B % # splits screen vertically\n
      4. Ctrl+B right-arrow-key # moves to right split\n
      5. `tail -f /tmp/rsync_output.txt | grep denied`\n
      \n
      Not quite a one-liner, but I can see how tmux is a big help here.
      """
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  +body: "Tmux is also good for long operations, as tmux is running as a server and you can close the terminal while tmux chugs away. Others can also connect to the tmux session through ssh and share screens."
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4592
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      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +slug: "Is-there-such-a-thing-as-split-screen-grep"
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    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +image: null
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      ChatGPT suggests the following:\n
      \n
      1. Run tmux\n
      2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
      3. Ctrl+B % # splits screen vertically\n
      4. Ctrl+B right-arrow-key # moves to right split\n
      5. `tail -f /tmp/rsync_output.txt | grep denied`\n
      \n
      Not quite a one-liner, but I can see how tmux is a big help here.
      """
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  +root: App\Entity\EntryComment {#4065}
  +body: "Don’t feed the beast."
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"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
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        \n
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        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2023-11-02 13:51:08.0 +01:00
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    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    }
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      date: 2024-01-01 18:54:00.0 +01:00
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    +magazine: App\Entity\Magazine {#263}
    +image: null
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      ChatGPT suggests the following:\n
      \n
      1. Run tmux\n
      2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
      3. Ctrl+B % # splits screen vertically\n
      4. Ctrl+B right-arrow-key # moves to right split\n
      5. `tail -f /tmp/rsync_output.txt | grep denied`\n
      \n
      Not quite a one-liner, but I can see how tmux is a big help here.
      """
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4592
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      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
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      +title: "linux"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +image: null
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      ChatGPT suggests the following:\n
      \n
      1. Run tmux\n
      2. `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | tee /tmp/rsync_output.txt`\n
      3. Ctrl+B % # splits screen vertically\n
      4. Ctrl+B right-arrow-key # moves to right split\n
      5. `tail -f /tmp/rsync_output.txt | grep denied`\n
      \n
      Not quite a one-liner, but I can see how tmux is a big help here.
      """
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  }
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
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        \n
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        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
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      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
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  +body: "I usually solve this kind of problem by piping to `less` or a logfile and then just searching in there. You can get it to refresh new content by pressing the End key twice. Or maybe less just needs the `-f` flag or something similar. I’m too lazy to look it up."
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
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        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
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      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
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      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4052
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
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        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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"App\Security\Voter\UserVoter"
null
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        \n
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        \n
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        - No misinformation\n
        - No NSFW content\n
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        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
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        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
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      \n
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      </span>\n
      ```
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  +body: """
    `less` can enter a grep-like mode by hitting `/`\n
    \n
    Edit: it’s `&amp;` for the grep mode, `/` is search.
    """
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        \n
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        \n
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        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
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      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
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      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    `less` can enter a grep-like mode by hitting `/`\n
    \n
    Edit: it’s `&amp;` for the grep mode, `/` is search.
    """
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        \n
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        - No misinformation\n
        - No NSFW content\n
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        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    `less` can enter a grep-like mode by hitting `/`\n
    \n
    Edit: it’s `&amp;` for the grep mode, `/` is search.
    """
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"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4658
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      +title: "linux"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      `less` can enter a grep-like mode by hitting `/`\n
      \n
      Edit: it’s `&amp;` for the grep mode, `/` is search.
      """
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"App\Security\Voter\UserVoter"
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        \n
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        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      `less` can enter a grep-like mode by hitting `/`\n
      \n
      Edit: it’s `&amp;` for the grep mode, `/` is search.
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}
"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
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        \n
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        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      `less` can enter a grep-like mode by hitting `/`\n
      \n
      Edit: it’s `&amp;` for the grep mode, `/` is search.
      """
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4718
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        \n
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        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
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        `less` can enter a grep-like mode by hitting `/`\n
        \n
        Edit: it’s `&amp;` for the grep mode, `/` is search.
        """
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  }
  +root: App\Entity\EntryComment {#4052}
  +body: "Oops yeah I just edited my comment, put the wrong symbol!"
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"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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  }
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        +body: "I usually solve this kind of problem by piping to `less` or a logfile and then just searching in there. You can get it to refresh new content by pressing the End key twice. Or maybe less just needs the `-f` flag or something similar. I’m too lazy to look it up."
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      +body: """
        `less` can enter a grep-like mode by hitting `/`\n
        \n
        Edit: it’s `&amp;` for the grep mode, `/` is search.
        """
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      }
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    }
    +root: App\Entity\EntryComment {#4052}
    +body: "More info: / only searches from cursor to end of file. ? searches from cursor to start of file."
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      "@bjoern_tantau@swg-empire.de"
      "@savedbythezsh@sh.itjust.works"
    ]
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  }
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4718
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      +title: "linux"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    }
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    }
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      date: 2024-01-01 18:54:00.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4658
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    +magazine: App\Entity\Magazine {#263}
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        +body: "I usually solve this kind of problem by piping to `less` or a logfile and then just searching in there. You can get it to refresh new content by pressing the End key twice. Or maybe less just needs the `-f` flag or something similar. I’m too lazy to look it up."
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        ]
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        +reports: Doctrine\ORM\PersistentCollection {#4045 …}
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        -id: 271722
        -bodyTs: "'content':28 'end':32 'f':41 'flag':42 'get':23 'key':33 'kind':5 'lazi':49 'less':11,37 'logfil':14 'look':51 'm':47 'mayb':36 'need':39 'new':27 'pipe':9 'press':30 'problem':7 'refresh':26 'search':18 'similar':45 'solv':3 'someth':44 'twice':34 'usual':2"
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      }
      +root: App\Entity\EntryComment {#4052}
      +body: """
        `less` can enter a grep-like mode by hitting `/`\n
        \n
        Edit: it’s `&amp;` for the grep mode, `/` is search.
        """
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        "@bjoern_tantau@swg-empire.de"
        "@canadaduane@lemmy.ca"
        "@bjoern_tantau@swg-empire.de"
      ]
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    }
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    +body: "More info: / only searches from cursor to end of file. ? searches from cursor to start of file."
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  }
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4679
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      +title: "linux"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      +apPreferredUsername: "linux"
      +apDiscoverable: true
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        date: 2024-10-22 09:53:16.0 +02:00
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        date: 2023-11-02 13:51:08.0 +01:00
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    }
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4624
    +user: Proxies\__CG__\App\Entity\User {#4625 …}
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    +magazine: App\Entity\Magazine {#263}
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      +entry: App\Entity\Entry {#2480}
      +magazine: App\Entity\Magazine {#263}
      +image: null
      +parent: null
      +root: null
      +body: "I usually solve this kind of problem by piping to `less` or a logfile and then just searching in there. You can get it to refresh new content by pressing the End key twice. Or maybe less just needs the `-f` flag or something similar. I’m too lazy to look it up."
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        date: 2024-03-17 10:38:16.0 +01:00
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        "@canadaduane@lemmy.ca"
      ]
      +children: Doctrine\ORM\PersistentCollection {#4051 …}
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      -id: 271722
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        date: 2024-01-01 20:02:17.0 +01:00
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    }
    +root: App\Entity\EntryComment {#4052}
    +body: """
      `less` can enter a grep-like mode by hitting `/`\n
      \n
      Edit: it’s `&amp;` for the grep mode, `/` is search.
      """
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      "@canadaduane@lemmy.ca"
      "@bjoern_tantau@swg-empire.de"
      "@canadaduane@lemmy.ca"
      "@bjoern_tantau@swg-empire.de"
    ]
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    +nested: Doctrine\ORM\PersistentCollection {#4628 …}
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    +reports: Doctrine\ORM\PersistentCollection {#4632 …}
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    -id: 271793
    -bodyTs: "'edit':11 'enter':3 'grep':6,16 'grep-lik':5 'hit':10 'less':1 'like':7 'mode':8,17 'search':19"
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    }
    +createdAt: DateTimeImmutable @1704141260 {#4623
      date: 2024-01-01 21:34:20.0 +01:00
    }
  }
  +root: App\Entity\EntryComment {#4052}
  +body: "That’s not at all grep-like. Grep is a line filter, not a character sequence highlighter."
  +lang: "en"
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    "@bjoern_tantau@swg-empire.de"
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    "@canadaduane@lemmy.ca"
    "@bjoern_tantau@swg-empire.de"
    "@savedbythezsh@sh.itjust.works"
  ]
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  }
  +createdAt: DateTimeImmutable @1704168242 {#4678
    date: 2024-01-02 05:04:02.0 +01:00
  }
}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4679
  +user: Proxies\__CG__\App\Entity\User {#4680 …}
  +entry: App\Entity\Entry {#2480
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      `less` can enter a grep-like mode by hitting `/`\n
      \n
      Edit: it’s `&amp;` for the grep mode, `/` is search.
      """
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"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      `less` can enter a grep-like mode by hitting `/`\n
      \n
      Edit: it’s `&amp;` for the grep mode, `/` is search.
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-01-01 18:54:00.0 +01:00
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  }
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        +body: "I usually solve this kind of problem by piping to `less` or a logfile and then just searching in there. You can get it to refresh new content by pressing the End key twice. Or maybe less just needs the `-f` flag or something similar. I’m too lazy to look it up."
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      +body: """
        `less` can enter a grep-like mode by hitting `/`\n
        \n
        Edit: it’s `&amp;` for the grep mode, `/` is search.
        """
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        "@bjoern_tantau@swg-empire.de"
        "@canadaduane@lemmy.ca"
        "@bjoern_tantau@swg-empire.de"
      ]
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        date: 2024-03-17 10:33:58.0 +01:00
      }
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        date: 2024-01-01 21:34:20.0 +01:00
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    }
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    +body: "That’s not at all grep-like. Grep is a line filter, not a character sequence highlighter."
    +lang: "en"
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      "@bjoern_tantau@swg-empire.de"
      "@savedbythezsh@sh.itjust.works"
      "@canadaduane@lemmy.ca"
      "@bjoern_tantau@swg-empire.de"
      "@savedbythezsh@sh.itjust.works"
    ]
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      date: 2024-01-02 05:04:02.0 +01:00
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  }
  +root: App\Entity\EntryComment {#4052}
  +body: "Oops sorry it’s `&amp;`! `/` is find"
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    "@Atemu@lemmy.ml"
  ]
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4732
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      +title: "linux"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4679
    +user: Proxies\__CG__\App\Entity\User {#4680 …}
    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
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        +body: "I usually solve this kind of problem by piping to `less` or a logfile and then just searching in there. You can get it to refresh new content by pressing the End key twice. Or maybe less just needs the `-f` flag or something similar. I’m too lazy to look it up."
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          "@canadaduane@lemmy.ca"
        ]
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      }
      +root: App\Entity\EntryComment {#4052}
      +body: """
        `less` can enter a grep-like mode by hitting `/`\n
        \n
        Edit: it’s `&amp;` for the grep mode, `/` is search.
        """
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        "@bjoern_tantau@swg-empire.de"
        "@canadaduane@lemmy.ca"
        "@bjoern_tantau@swg-empire.de"
      ]
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      "@canadaduane@lemmy.ca"
      "@bjoern_tantau@swg-empire.de"
      "@savedbythezsh@sh.itjust.works"
    ]
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      date: 2024-01-02 05:04:02.0 +01:00
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  }
  +root: App\Entity\EntryComment {#4052}
  +body: "Oops sorry it’s `&amp;`! `/` is find"
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  +isAdult: false
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    "@Atemu@lemmy.ml"
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4732
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  +entry: App\Entity\Entry {#2480
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    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      +apPreferredUsername: "linux"
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        date: 2024-10-22 09:53:16.0 +02:00
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        date: 2023-11-02 13:51:08.0 +01:00
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    }
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: App\Entity\EntryComment {#4679
    +user: Proxies\__CG__\App\Entity\User {#4680 …}
    +entry: App\Entity\Entry {#2480}
    +magazine: App\Entity\Magazine {#263}
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        +entry: App\Entity\Entry {#2480}
        +magazine: App\Entity\Magazine {#263}
        +image: null
        +parent: null
        +root: null
        +body: "I usually solve this kind of problem by piping to `less` or a logfile and then just searching in there. You can get it to refresh new content by pressing the End key twice. Or maybe less just needs the `-f` flag or something similar. I’m too lazy to look it up."
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          "@canadaduane@lemmy.ca"
        ]
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        -id: 271722
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      }
      +root: App\Entity\EntryComment {#4052}
      +body: """
        `less` can enter a grep-like mode by hitting `/`\n
        \n
        Edit: it’s `&amp;` for the grep mode, `/` is search.
        """
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        "@canadaduane@lemmy.ca"
        "@bjoern_tantau@swg-empire.de"
        "@canadaduane@lemmy.ca"
        "@bjoern_tantau@swg-empire.de"
      ]
      +children: Doctrine\ORM\PersistentCollection {#4626 …}
      +nested: Doctrine\ORM\PersistentCollection {#4628 …}
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      -bodyTs: "'edit':11 'enter':3 'grep':6,16 'grep-lik':5 'hit':10 'less':1 'like':7 'mode':8,17 'search':19"
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      }
      +createdAt: DateTimeImmutable @1704141260 {#4623
        date: 2024-01-01 21:34:20.0 +01:00
      }
    }
    +root: App\Entity\EntryComment {#4052}
    +body: "That’s not at all grep-like. Grep is a line filter, not a character sequence highlighter."
    +lang: "en"
    +isAdult: false
    +favouriteCount: 0
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      date: 2024-01-02 05:04:02.0 +01:00
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      "@canadaduane@lemmy.ca"
      "@bjoern_tantau@swg-empire.de"
      "@savedbythezsh@sh.itjust.works"
      "@canadaduane@lemmy.ca"
      "@bjoern_tantau@swg-empire.de"
      "@savedbythezsh@sh.itjust.works"
    ]
    +children: Doctrine\ORM\PersistentCollection {#4681 …}
    +nested: Doctrine\ORM\PersistentCollection {#4683 …}
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    +createdAt: DateTimeImmutable @1704168242 {#4678
      date: 2024-01-02 05:04:02.0 +01:00
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  }
  +root: App\Entity\EntryComment {#4052}
  +body: "Oops sorry it’s `&amp;`! `/` is find"
  +lang: "en"
  +isAdult: false
  +favouriteCount: 1
  +score: 0
  +lastActive: DateTime @1704169378 {#4730
    date: 2024-01-02 05:22:58.0 +01:00
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    "@canadaduane@lemmy.ca"
    "@bjoern_tantau@swg-empire.de"
    "@savedbythezsh@sh.itjust.works"
    "@Atemu@lemmy.ml"
  ]
  +children: Doctrine\ORM\PersistentCollection {#4733 …}
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4167
  +user: App\Entity\User {#4180 …}
  +entry: App\Entity\Entry {#2480
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
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        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      \n
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      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
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      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
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    Run rsync, pipe to tee, and redirect the output to a named pipe (mkfifo). Open a second terminal and direct the named pipe into a grep command. Arrange the terminals in whatever way you want.\n
    \n
    ```\n
    \n
    <span style="color:#323232;">mkfifo mypipe\n
    </span><span style="color:#323232;">rsync | tee mypipe\n
    </span><span style="color:#323232;">grep "denied" < mypipe\n
    </span>\n
    ```
    """
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        \n
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        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
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      \n
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      \n
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      \n
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      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
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      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    Run rsync, pipe to tee, and redirect the output to a named pipe (mkfifo). Open a second terminal and direct the named pipe into a grep command. Arrange the terminals in whatever way you want.\n
    \n
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    \n
    <span style="color:#323232;">mkfifo mypipe\n
    </span><span style="color:#323232;">rsync | tee mypipe\n
    </span><span style="color:#323232;">grep "denied" < mypipe\n
    </span>\n
    ```
    """
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"App\Security\Voter\UserVoter"
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        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
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        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
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      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    Run rsync, pipe to tee, and redirect the output to a named pipe (mkfifo). Open a second terminal and direct the named pipe into a grep command. Arrange the terminals in whatever way you want.\n
    \n
    ```\n
    \n
    <span style="color:#323232;">mkfifo mypipe\n
    </span><span style="color:#323232;">rsync | tee mypipe\n
    </span><span style="color:#323232;">grep "denied" < mypipe\n
    </span>\n
    ```
    """
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"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
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        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +url: null
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +magazine: App\Entity\Magazine {#263}
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      Run rsync, pipe to tee, and redirect the output to a named pipe (mkfifo). Open a second terminal and direct the named pipe into a grep command. Arrange the terminals in whatever way you want.\n
      \n
      ```\n
      \n
      <span style="color:#323232;">mkfifo mypipe\n
      </span><span style="color:#323232;">rsync | tee mypipe\n
      </span><span style="color:#323232;">grep "denied" < mypipe\n
      </span>\n
      ```
      """
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}
"App\Security\Voter\UserVoter"
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        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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"App\Security\Voter\UserVoter"
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        \n
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        - No misinformation\n
        - No NSFW content\n
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        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
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      \n
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      \n
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      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
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      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
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      \n
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      </span>\n
      ```
      """
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"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
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        \n
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        \n
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        \n
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        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
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      \n
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      \n
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      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
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    +editedAt: DateTimeImmutable @1710501214 {#1816
      date: 2024-03-15 12:13:34.0 +01:00
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    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    Given encouragement to try tmux, here is what I’ve come up with as a “one-liner” (script) that does what I was originally looking for:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">#!/bin/sh\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">tmux new-session -d -s split_screen_grep ; \n
    </span><span style="color:#323232;">  send-keys "/bin/sh -c '$1' | tee /tmp/split_screen_grep.txt" C-m ; \n
    </span><span style="color:#323232;">  split-window -h ; \n
    </span><span style="color:#323232;">  select-pane -t 1 ; \n
    </span><span style="color:#323232;">  send-keys "tail -f /tmp/split_screen_grep.txt | grep '$2'" C-m ;\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">tmux attach-session -t split_screen_grep\n
    </span>\n
    ```\n
    \n
    I use it as follows, first arg is a command, second arg is a pattern to search for:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ ./split-grep "cat big_file.txt" "tmux"\n
    </span>\n
    ```
    """
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"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2023-11-02 13:51:08.0 +01:00
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    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    Given encouragement to try tmux, here is what I’ve come up with as a “one-liner” (script) that does what I was originally looking for:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">#!/bin/sh\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">tmux new-session -d -s split_screen_grep ; \n
    </span><span style="color:#323232;">  send-keys "/bin/sh -c '$1' | tee /tmp/split_screen_grep.txt" C-m ; \n
    </span><span style="color:#323232;">  split-window -h ; \n
    </span><span style="color:#323232;">  select-pane -t 1 ; \n
    </span><span style="color:#323232;">  send-keys "tail -f /tmp/split_screen_grep.txt | grep '$2'" C-m ;\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">tmux attach-session -t split_screen_grep\n
    </span>\n
    ```\n
    \n
    I use it as follows, first arg is a command, second arg is a pattern to search for:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ ./split-grep "cat big_file.txt" "tmux"\n
    </span>\n
    ```
    """
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4240
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  +entry: App\Entity\Entry {#2480
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1704218040
    +visibility: "visible             "
    +apId: "https://lemmy.ca/post/12450133"
    +editedAt: DateTimeImmutable @1710501214 {#1816
      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    Given encouragement to try tmux, here is what I’ve come up with as a “one-liner” (script) that does what I was originally looking for:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">#!/bin/sh\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">tmux new-session -d -s split_screen_grep ; \n
    </span><span style="color:#323232;">  send-keys "/bin/sh -c '$1' | tee /tmp/split_screen_grep.txt" C-m ; \n
    </span><span style="color:#323232;">  split-window -h ; \n
    </span><span style="color:#323232;">  select-pane -t 1 ; \n
    </span><span style="color:#323232;">  send-keys "tail -f /tmp/split_screen_grep.txt | grep '$2'" C-m ;\n
    </span><span style="color:#323232;">\n
    </span><span style="color:#323232;">tmux attach-session -t split_screen_grep\n
    </span>\n
    ```\n
    \n
    I use it as follows, first arg is a command, second arg is a pattern to search for:\n
    \n
    ```\n
    \n
    <span style="color:#323232;">$ ./split-grep "cat big_file.txt" "tmux"\n
    </span>\n
    ```
    """
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  +isAdult: false
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    date: 2024-01-02 04:20:43.0 +01:00
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    "323232"
  ]
  +mentions: [
    "@canadaduane@lemmy.ca"
  ]
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  +reports: Doctrine\ORM\PersistentCollection {#4247 …}
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    date: 2024-01-02 04:20:43.0 +01:00
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4256
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  +entry: App\Entity\Entry {#2480
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      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2023-11-02 13:51:08.0 +01:00
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    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +upVotes: 0
    +downVotes: 0
    +ranking: 1704218040
    +visibility: "visible             "
    +apId: "https://lemmy.ca/post/12450133"
    +editedAt: DateTimeImmutable @1710501214 {#1816
      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
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  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    Your request goes against the [unix philosophy](http://www.catb.org/~esr/writings/taoup/html/ch01s06.html). Grep does one thing and does it well. If you desire additional functionality, you should add another utility to accomplish what you want.\n
    \n
    > rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
    \n
    In your specific task, utilize bashims to do *(what I think)* you want:\n
    \n
    `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ || echo “task failed”`
    """
  +lang: "en"
  +isAdult: false
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    date: 2024-01-02 03:06:14.0 +01:00
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    "@canadaduane@lemmy.ca"
    "@canadaduane@lemmy.ca"
  ]
  +children: Doctrine\ORM\PersistentCollection {#4257 …}
  +nested: Doctrine\ORM\PersistentCollection {#4259 …}
  +votes: Doctrine\ORM\PersistentCollection {#4261 …}
  +reports: Doctrine\ORM\PersistentCollection {#4263 …}
  +favourites: Doctrine\ORM\PersistentCollection {#4265 …}
  +notifications: Doctrine\ORM\PersistentCollection {#4267 …}
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  }
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}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4256
  +user: App\Entity\User {#4269 …}
  +entry: App\Entity\Entry {#2480
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      +apPreferredUsername: "linux"
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        date: 2024-10-22 09:53:16.0 +02:00
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      +apDeletedAt: null
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      +visibility: "visible             "
      +createdAt: DateTimeImmutable @1698929468 {#269
        date: 2023-11-02 13:51:08.0 +01:00
      }
    }
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    Your request goes against the [unix philosophy](http://www.catb.org/~esr/writings/taoup/html/ch01s06.html). Grep does one thing and does it well. If you desire additional functionality, you should add another utility to accomplish what you want.\n
    \n
    > rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
    \n
    In your specific task, utilize bashims to do *(what I think)* you want:\n
    \n
    `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ || echo “task failed”`
    """
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    "@canadaduane@lemmy.ca"
    "@canadaduane@lemmy.ca"
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"App\Security\Voter\UserVoter"
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      +title: "linux"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
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        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        date: 2024-10-22 09:53:16.0 +02:00
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        date: 2023-11-02 13:51:08.0 +01:00
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    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: """
    Your request goes against the [unix philosophy](http://www.catb.org/~esr/writings/taoup/html/ch01s06.html). Grep does one thing and does it well. If you desire additional functionality, you should add another utility to accomplish what you want.\n
    \n
    > rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
    \n
    In your specific task, utilize bashims to do *(what I think)* you want:\n
    \n
    `rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ || echo “task failed”`
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 1
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    date: 2024-01-02 03:06:14.0 +01:00
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    "@canadaduane@lemmy.ca"
    "@canadaduane@lemmy.ca"
    "@canadaduane@lemmy.ca"
  ]
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  +nested: Doctrine\ORM\PersistentCollection {#4259 …}
  +votes: Doctrine\ORM\PersistentCollection {#4261 …}
  +reports: Doctrine\ORM\PersistentCollection {#4263 …}
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    date: 2024-01-02 03:06:14.0 +01:00
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4329
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  +entry: App\Entity\Entry {#2480
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
      +rules: null
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        date: 2024-10-22 09:52:22.0 +02:00
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      +posts: Doctrine\ORM\PersistentCollection {#136 …}
      +subscriptions: Doctrine\ORM\PersistentCollection {#198 …}
      +bans: Doctrine\ORM\PersistentCollection {#115 …}
      +reports: Doctrine\ORM\PersistentCollection {#101 …}
      +badges: Doctrine\ORM\PersistentCollection {#79 …}
      +logs: Doctrine\ORM\PersistentCollection {#69 …}
      +awards: Doctrine\ORM\PersistentCollection {#1830 …}
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        date: 2023-11-02 13:51:08.0 +01:00
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    }
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#1900 …}
    +slug: "Is-there-such-a-thing-as-split-screen-grep"
    +title: "Is there such a thing as split-screen grep?"
    +url: null
    +body: """
      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
      ```\n
      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
      </span><span style="color:#323232;"># check for permission denied errors in your homedir:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied\n
      </span>\n
      ```
      """
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    +lang: "en"
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    -id: 26591
    -titleTs: "'grep':10 'screen':9 'split':8 'split-screen':7 'thing':5"
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    +upVotes: 0
    +downVotes: 0
    +ranking: 1704218040
    +visibility: "visible             "
    +apId: "https://lemmy.ca/post/12450133"
    +editedAt: DateTimeImmutable @1710501214 {#1816
      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: "I daresay there’s a way to do something like this with [fzf](https://github.com/junegunn/fzf)"
  +lang: "en"
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    "@canadaduane@lemmy.ca"
  ]
  +children: Doctrine\ORM\PersistentCollection {#4330 …}
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  +visibility: "visible             "
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  +editedAt: null
  +createdAt: DateTimeImmutable @1704150351 {#4325
    date: 2024-01-02 00:05:51.0 +01:00
  }
}
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4329
  +user: App\Entity\User {#4342 …}
  +entry: App\Entity\Entry {#2480
    +user: Proxies\__CG__\App\Entity\User {#1966 …}
    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
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        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
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      \n
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      \n
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        - No misinformation\n
        - No NSFW content\n
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        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      \n
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      \n
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      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
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      </span>\n
      ```
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"App\Security\Voter\UserVoter"
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        From Wikipedia, the free encyclopedia\n
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        \n
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        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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      I want to run a command and see all of its output on the left hand side, while simultaneously searching/grepping for particular lines on the right hand side. In other words, I want a temporary vertically split screen in my CLI, ideally with scrollback on each side of the split, but where I expect the left hand side to be scrolling thousands of lines quickly, while on the right hand side is a slow accumulation of “matches” to my grep.\n
      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
      EDIT: To be clear, a one-liner is preferable over learning tmux or screen, although this does motivate me to perhaps begin learning tmux.\n
      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
      \n
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      \n
      <span style="color:#323232;"># first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:\n
      </span><span style="color:#323232;">rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/\n
      </span><span style="color:#323232;">\n
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      </span>\n
      ```
      """
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}
"App\Security\Voter\UserVoter"
null
"App\Security\Voter\UserVoter"
App\Entity\EntryComment {#4477
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    +magazine: App\Entity\Magazine {#263
      +icon: Proxies\__CG__\App\Entity\Image {#244 …}
      +name: "linux@lemmy.ml"
      +title: "linux"
      +description: """
        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      \n
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        - No misinformation\n
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        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
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      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
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      \n
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        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      \n
      Is this possible today? What tools would you recommend to accomplish this?\n
      \n
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      \n
      In case this is an X/Y problem: The specific command I’m trying to run is an rsync simulation (dry-run) where I want to both check that the command works, and subsequently check that there are no `denied` errors. The recommended way to do this is to run the command twice, as follows (but I want to combine it into one pass):\n
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      \n
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    -bodyTs: "'/home':206,223 'accomplish':91 'accumul':75 'although':108 'backupdir':208,225 'begin':115 'case':119 'check':145,152,209 'clear':96 'cli':41 'combin':177 'command':6,127,148,169 'deni':157,212,227 'dri':138 'dry-run':137 'edit':93 'error':158,213 'exclud':203,220 'exclude-from':202,219 'expect':54 'first':182 'follow':172 'grep':80,226 'hand':16,27,57,70 'homedir':216 'ideal':42 'learn':104,116 'left':15,56 'line':23,64 'liner':100 'm':129 'match':77 'motiv':111 'n':185 'nap':201,218 'one':99,180 'one-lin':98 'oper':192 'output':12 'paramet':186 'particular':22 'pass':181 'perhap':114 'permiss':211 'possibl':83 'prefer':102 'problem':124 'quick':65 'recommend':89,160 'right':26,69 'rsync':135,188,200,217 'rsync-homedir-local.txt':205,222 'run':4,132,139,167 'screen':38,107 'scroll':61 'scrollback':44 'searching/grepping':20 'see':8 'side':17,28,47,58,71 'simul':136,190 'simultan':19 'slow':74 'specif':126 'specifi':183 'split':37,50 'start':199 'subsequ':151 'temporari':35 'thousand':62 'tmux':105,117 'today':84 'tool':86 'tri':130 'twice':170 'use':195 'user':207,224 'vertic':36 'want':2,33,142,175 'way':161 'word':31 'work':149 'would':87 'x/y':123"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1704218040
    +visibility: "visible             "
    +apId: "https://lemmy.ca/post/12450133"
    +editedAt: DateTimeImmutable @1710501214 {#1816
      date: 2024-03-15 12:13:34.0 +01:00
    }
    +createdAt: DateTimeImmutable @1704131640 {#2419
      date: 2024-01-01 18:54:00.0 +01:00
    }
  }
  +magazine: App\Entity\Magazine {#263}
  +image: null
  +parent: null
  +root: null
  +body: "Couldn’t you just check the rsync exit codes? `echo $?` check if both return 0?"
  +lang: "en"
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    "@canadaduane@lemmy.ca"
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  +children: Doctrine\ORM\PersistentCollection {#4478 …}
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  +votes: Doctrine\ORM\PersistentCollection {#4482 …}
  +reports: Doctrine\ORM\PersistentCollection {#4484 …}
  +favourites: Doctrine\ORM\PersistentCollection {#4486 …}
  +notifications: Doctrine\ORM\PersistentCollection {#4488 …}
  -id: 287091
  -bodyTs: "'0':15 'check':5,11 'code':9 'couldn':1 'echo':10 'exit':8 'return':14 'rsync':7"
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    date: 2024-01-01 21:32:04.0 +01:00
  }
}
"App\Security\Voter\UserVoter"
App\Entity\Magazine {#263
  +icon: Proxies\__CG__\App\Entity\Image {#244 …}
  +name: "linux@lemmy.ml"
  +title: "linux"
  +description: """
    From Wikipedia, the free encyclopedia\n
    \n
    Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
    \n
    Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
    \n
    ### Rules\n
    \n
    - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
    - No misinformation\n
    - No NSFW content\n
    - No hate speech, bigotry, etc\n
    \n
    ### Related Communities\n
    \n
    - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
    - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
    - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
    - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
    \n
    Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
    """
  +rules: null
  +subscriptionsCount: 1
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  +postCommentCount: 214
  +isAdult: false
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    date: 2024-10-22 09:52:22.0 +02:00
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  +markedForDeletionAt: null
  +tags: null
  +moderators: Doctrine\ORM\PersistentCollection {#235 …}
  +ownershipRequests: Doctrine\ORM\PersistentCollection {#231 …}
  +moderatorRequests: Doctrine\ORM\PersistentCollection {#220 …}
  +entries: Doctrine\ORM\PersistentCollection {#178 …}
  +posts: Doctrine\ORM\PersistentCollection {#136 …}
  +subscriptions: Doctrine\ORM\PersistentCollection {#198 …}
  +bans: Doctrine\ORM\PersistentCollection {#115 …}
  +reports: Doctrine\ORM\PersistentCollection {#101 …}
  +badges: Doctrine\ORM\PersistentCollection {#79 …}
  +logs: Doctrine\ORM\PersistentCollection {#69 …}
  +awards: Doctrine\ORM\PersistentCollection {#1830 …}
  +categories: Doctrine\ORM\PersistentCollection {#1863 …}
  -id: 73
  +apId: "linux@lemmy.ml"
  +apProfileId: "https://lemmy.ml/c/linux"
  +apPublicUrl: "https://lemmy.ml/c/linux"
  +apFollowersUrl: "https://lemmy.ml/c/linux/followers"
  +apInboxUrl: "https://lemmy.ml/inbox"
  +apDomain: "lemmy.ml"
  +apPreferredUsername: "linux"
  +apDiscoverable: true
  +apManuallyApprovesFollowers: null
  +privateKey: null
  +publicKey: null
  +apFetchedAt: DateTime @1729583596 {#267
    date: 2024-10-22 09:53:16.0 +02:00
  }
  +apDeletedAt: null
  +apTimeoutAt: null
  +visibility: "visible             "
  +createdAt: DateTimeImmutable @1698929468 {#269
    date: 2023-11-02 13:51:08.0 +01:00
  }
}
"App\Security\Voter\UserVoter"

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