136
WDYM your terminal isn't a test suite? (lemmy.tf)
submitted 2 years ago by to c/programmer_humor@programming.dev
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[–] 16 points 2 years ago* (last edited 2 years ago) (3 children)

I legitimately back up my history file. Mostly because it likes to truncate itself randomly (though this may have been fixed in zsh, or my config, because it's been a while). Just a systemd timer that triggers a shell script to copy it by date and rotate anything older than 100 copies.

Edit: WHY DID I SAY ANYTHING? After like 3 months of no problems, my history truncated itself to 3 entries a few minutes ago. I've only ever seen a few days of loss before that lol.

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  • [–] 3 points 2 years ago (1 child)

    I'm annoyed when my thirteen bash instances don't share history, but I'd probably be a lot more annoyed if they did.

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  • [–] 2 points 2 years ago (1 child)

    That's one thing I like about zsh, or my config at least, because I use i3 and therefore tend to open lots of shells. History is mostly local until I hit return twice (two empty prompts) at which point I can get history from other sessions. It's stuck more global at that point though aside from future history.

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    • [–] 15 points 2 years ago (1 child)

    I just start every command with a space, don't see the issue.

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  • [–] 13 points 2 years ago* (2 children)

    Was working on a server where I did not want to put some dumb command into the history, so I add a space like you do. Press up. The command is there. The fucking insult I felt.

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    • [–] 12 points 2 years ago (2 children)

    Can somebody please tell me what history -c is?

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  • [–] 9 points 2 years ago (3 children)

    history displays a list of all commands you have run on the terminal since the history list was last cleared. It is invaluable for referring back to a big complex command or set of commands you ran at some point in the past. The -c flag clears that history.

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  • [+] 3 points 2 years ago* (last edited 1 year ago) (1 child)
    [deleted]
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  • [–] 1 point 2 years ago*

    Yes, my comment only applies to the shell history in memory. -c clears history immediately, but you can still reload it from disk if you haven't overwritten that with -w. If you tend to close your terminal windows frequently and rely on the history feature between sessions, it would benefit you to learn about the intricacies of the on-disk copy of history and how its affected by writes, appends, clears, crashes, etc. I tend to leave my terminal windows open a long time and copy any complex commands out to my PKM if I need to save them for future sessions, so I generally try not to rely on .bash_history, but it has saved my bacon on more than one occasion.

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  • [–] 6 points 2 years ago* (last edited 2 years ago)

    It lets you clear the bash command history, either completely or selectively. Here's the GNU docs for the history builtin: https://www.gnu.org/software/bash/manual/html_node/Bash-History-Builtins.html#index-history

    (I'm not too familiar, someone else can clarify: is this available outside bash?)

    What's interesting to me is the -a option, which lets you "flush" the history for the current session without ending the session. I can see that being useful!

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    • [–] 6 points 2 years ago (1 child)

    Can someone explain, I don't get it.

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  • [–] 5 points 2 years ago (2 children)

    If you clear your history, you feel like a SpongeBob popsicle for some reason? That's what I'm reading. Gotta be it.

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  • [–] 1 point 2 years ago (1 child)

    Weird, I clear my history very frequently and never once felt like a SpongeBob popsicle.

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    • [–] 6 points 2 years ago (1 child)

    Don't fucking do this in zsh, it does NOT do the same thing that it does in bash.

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    • [–] 5 points 2 years ago (1 child)

    Welp, just did this to see what -c does...

    Excuse me whilst I cry myself to sleep

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