There are tons of clipboard managers for Linux. I used clipit and copyq but there are more.
Funny story: some desktop support guy came to do something on my laptop. He opened some remote file, copied admins password, pasted it into login prompt, did his things, selected some random texts and pressed ctrl+c couple of times. I asked him if that was to clear the password and he says that yes. I’m like… look here, and I clicked in my clipboard manager icon and the password is there in the history. LoL.