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.

  • alvendam@lemmy.world
    2·
    10 months ago

    What’s the syntax here? Do I go

    command && yes

    I’m not sure if I’ve had a use case for it, but it’s interesting.

    • MonkderVierte@lemmy.ml
      3·
      10 months ago

      true delivers error level 0, false error level 1.

      yes && echo True || echo False will always be True.

      false && echo True || echo False will always be False.

      Common usage is for tools that ask for permissions and similiar. yes | cp -i has the same effect as cp --force (-i: prompt before overwrites).

    • DigitalDilemma@lemmy.mlEnglish
      2·
      10 months ago

      Sorry, I should have explained that. it’s command | yes yes|command - Eg, yes|apt-get update (Not a great example since apt-get has -y, but sometimes that fails when prompting for new keys to accept)

      Edit: I got it backwards, thanks @lengau@midwest.social for the correction.

    • markstos@lemmy.world
      2·
      10 months ago

      For some cases I use “|| true”.

      The idiom accepts that the preceding command might fail, and that’s OK.

      For example, a script where mkdir creates a directory that might already exist.