this post was submitted on 23 Oct 2024
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    99
    I did the classic blunder today (feditown.com)
    submitted 2 weeks ago by exu@feditown.com to c/linuxmemes@lemmy.world
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    [–] exu@feditown.com 16 points 2 weeks ago (1 children)

    I ran the command without sudo first. It had a bunch of permission errors removing stuff in /tmp. So I retried but with sudo

    [–] superkret@feddit.org 16 points 2 weeks ago* (last edited 2 weeks ago) (2 children)

    /tmp is world-writable. If you get permission-errors, you should become suspicious.
    Also, whenever you write "sudo rm -rf" you should quadruple-check if that's really what you want to do.
    Non-interactively deleting entire directories in root space isn't something you should have to do normally.

    [–] bjoern_tantau@swg-empire.de 22 points 2 weeks ago (2 children)

    /tmp might be world writable but everything created in there belongs to the respective users.

    [–] superkret@feddit.org 6 points 2 weeks ago

    TIL. Makes sense, though.

    [–] shoki@lemmy.world 3 points 2 weeks ago

    Exactly! if a service running under root creates a file, it belongs to root. if that file has permissions that don't allow other users to write (most do), then you can't delete it without sudo afaik

    [–] exu@feditown.com 3 points 2 weeks ago

    Agreed, I should have been more careful. Fortunately it was just my downloads folder.
    In wanted to clear my /tmp, because I'd run out of space there for extracting an ISO file. It lives on a tmpfs, so space is quite limited.