What's (are) the funniest/stupidest way(s) you've broken your linux setup?

Tinkering is all fun and games, until it’s 4 am, your vision is blurry, and thinking straight becomes a non-option, or perhaps you just get overly confident, type something and press enter before considering the consequences of the command you’re about to execute… And then all you have is a kernel panic and one thought bouncing in your head: “damn, what did I expect to happen?”.

Off the top of my head I remember 2 of those. Both happened a while ago, so I don’t remember all the details, unfortunately.

For the warmup, removing PAM. I was trying to convert my artix install to a regular arch without reinstalling everything. Should be kinda simple: change repos, install systemd, uninstall dinit and it’s units, profit. Yet after doing just that I was left with some PAM errors… So, I Rdd-ed libpam instead of just using –overwrite. Needless to say, I had to search for live usb yet again.

And the one at least I find quite funny. After about a year of using arch I was considering myself a confident enough user, and it so happened that I wanted to install smth that was packaged for debian. A reasonable person would, perhaps, write a pkgbuild that would unpack the .deb and install it’s contents properly along with all the necessary dependencies. But not me, I installed dpkg. The package refused to either work or install complaining that the version of glibc was incorrect… So, I installed glibc from Debian’s repos. After a few seconds my poor PC probably spent staring in disbelief at the sheer stupidity of the meatbag behind the keyboard, I was met with a reboot, a kernel panic, and a need to find another PC to flash an archiso to a flash drive ('cause ofc I didn’t have one at the time).

Anyways, what are your stories?

skeletorfw,

My own classic was fiddling with the nvidia PRIME config to try and get rid of some very mildly irritating screen tearing. No graphics output at all. Now this is fixable of course, but it’s a pig.

And I’d decided to do this 2 hours before an incredibly important progress review meeting for my PhD.

Got it back with about 10 mins to spare and decided just to leave the driver config alone after that.

Bonus round

Also a friend managed to bork his ubuntu 16 laptop by trying to switch from unity to gnome and ending up with sort of neither. That was reinstall territory right there.

Petter1,

For me, it was a simple enabling of AUR im manjaro, twice Now I use arch, lol.

carcus,

Learned about the importance of trailing slashes in rsync by using the -delete flag.

mlg,
@mlg@lemmy.world avatar

fstab bind mount for /home that I misspelled, so I couldn’t login as myself.

fstab external hdd mount that didn’t have ignore flag so PC would pop if I booted while unplugged

Accidentally booting windows after a year and it overwrite my EFI boot entry.

The best I’ve see however was an acquaintance who accidentally set perms to own user on /usr/bin

So everything went from root:root to user:user which removed all the SUID/SGID bits as well so a bunch of bins broke lol.

Believe it or not, it was actually fairly easy to fix with chmod and chown

Nibodhika,

I’ve done my plenty of stupid stuff, from dd disks I was using to forcefully uninstall dependencies of the package manager. But the one that takes the cake for me happened back in 2012, I was working at a research lab in the university and was sharing a computer with another intern. That other intern used Gentoo and so we agreed that the machine should be Gentoo, I’ve installed it at my house on my PC and got comfortable with it before we shared that computer. One thing that I learnt when installing Gentoo is that the /dev folder is created on boot, you don’t populate it when installing, instead you mount the one from the host system you’re using to install.

The computer had an issue with a device, can’t even remember what it was, so I thought I’ll run rm -rf /dev that should take care of the issue and after a reboot it will be repopulated… It might have worked, but what I actually ran was rm -rf /etc.

Engywuck,

“Updating” a 5.2 RedHat install with a 6.0 Mandrake CD-ROM (or the opposite, can’t remember right now…). Fun stuff.

Kidplayer_666,

Man, this was a few months back. I’ve got fedora asahi Linux (Linux on an ARM Mac) and I was trying to install Pycharm to play a bit with Python. Unfortunately, they did not have it packaged for arm, so I had to download a pre compiled tar or zip folder. I test it, see that it is an assortment of bin folders and alike, and decide to put it all elsewhere so it wouldn’t get lost. So I put it on the root and merge the folders. I think immediately “wait this is stupid” and decide to get Pycharm out of there. (I was on nautilus with root privileges), so i simply Ctrl-Z outa there. It shows a warning whether I wanted to delete 4000 files, but because I am an idiot, I didn’t realise what rhay meant. So I did it. I then continue on with my life, and find myself unable to open apps. I was fairly confused, as the apps I already had open still worked. I decide to try to restart the laptop. It is when I see that there is no restart button anymore that I realise what I did, and I just think to myself. I’ll be dammed if this survives a restart, im already screwed so it doesn’t matter. (It didn’t survive the reboot, had to install from scratch. At least an excuse to use the K desktop environment)

reallyzen, (edited )
@reallyzen@lemmy.ml avatar

Generated my grub configuration as grub.conf

This one took a stupid amount of time to debug - but on the other hand, when grub failed it did with “can’t find any bootable thingy” and not “missing configuration file” as, in my later opinion, it should.

Life Linux is a harsh mistresses, sometimes.

escapedgoat,

ran chown -R www-data: ./ from /var instead of /var/www.

BlueEther,
@BlueEther@no.lastname.nz avatar

I’ve broken systems far too many times in the last 24 years, since Mandrake 6.x, to count:

  • I’ve dd a disk or more
  • I’ve rm *
  • I’ve chmod
  • I’ve brought down the network, with every intention tar it would come back - on a remote box
  • I’ve failed to RTFM far too many times
9488fcea02a9,

I didnt break anything, but there was this one time i was setting up a new lxc container i had just spun up. I installed nginx, and a bunch of other packages, started writing new config files… Then i noticed my prompt was user@desktop$ instead of user@server$

Whoops… I was in the wrong terminal window, typing commands into my desktop instead of the container i was setting up.

fl42v,

Oh, I just remembered another one or three. So, resizing the partitions. My install at the time had a swap partition that I didn’t need anymore. Should be simple, right? Remove the partition and the corresponding fstab entry, resize root, profit. Well, the superblock disagreed. Fortunately, I was lucky enough to be able to re-create the scheme as it was, and then take my time to read the wiki and do the procedure properly (e2fsck, resize2fs and all that stuff).

Some people I’ve met since, unfortunately, weren’t so lucky (as far as I remember, both tried to shrink and were past mkfs already) and had to reinstall. The moral is, one does simply mess with superblocks; read the wiki first!

glibg10b,

I wanted to use fio to benchmark my root drive. I had seen a tutorial saying that the file= parameter should point to the device file, so I pointed it at /dev/sda. As you might expect, the write test didn’t go so well.

krimson, (edited )
@krimson@feddit.nl avatar

Many many years ago I wanted to clean up my freshly installed Slackware system by removing old files.

find / -mtime +30 -exec rm -f {};

Bad idea.

glibg10b, (edited )

Before installing Arch on a USB flash drive, I disabled ext4 journaling in order to reduce disk reads and writes, being fully aware of the implications (file corruption after unexpected power loss). I was confident that I would never have to pull the plug or the drive without issuing a normal shutdown first. Unfortunately, there was one possibility I hadn’t considered: sometimes, there’s that one service preventing your PC from turning off, and at that stage there’s no way to kill it (besides waiting for systemd to time out, but I was impatient).

So I pulled the plug. The system booted fine, but was missing some binaries. Unfortunately, I couldn’t use pacman to restore them because some of the files it relied on were also destroyed.

This was not the last time I went through this. Luckily I’ve learned my lesson by now

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