Which Linux command or utility is simple, powerful, and surprisingly unknown to many people or used less often?

This could be a command or a piece of software or an application.

For example I’m surprised to find that many people are unaware of Caddy, a very simple web server that can make setting up a reverse proxy incredibly easy.

Another example is fzf. Many people overlook this, a fast command-line fuzzy finder. It’s versatile for searching files, directories, or even shell history with minimal effort.

    • MonkderVierte
      1·
      4 days ago

      Thanks, couldn’t get it ever to work tho, and it doesn’t come with a default config in Arch.

      • communism
        4·
        4 days ago

        Because it’s so simple, a good default config can be a one-liner. For similar functionality to default sudo:

        permit persist setenv {PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin} :wheel

        Allows members of wheel to run commands as any user (if you just run doas <cmd> it will default to root), and “persists” for 5 minutes, ie if you run doas then for the next 5 minutes in the same session you won’t have to enter your password to run doas again, similar to default sudo settings.

        https://wiki.archlinux.org/title/Doas

        What problems were you having where you couldn’t get it to work?

        • MonkderVierte
          1·
          3 days ago

          Always got permission denied, no matter what in the config. But thanks, i’ll try again.