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Fish Shell 4.8 Improves History Search, Scripting, and Completions (linuxiac.com)
submitted 1 month ago by to c/linux@programming.dev
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[–] 14 points 1 month ago* (3 children)

Basically every non-Windows system comes with a POSIX-compliant shell at /bin/sh. If you're using shebangs in your POSIX shell scripts like you should, using Fish as your Friendly Interactive Shell shouldn't be a problem.

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  • [–] 0 points 1 month ago (1 child)

    Don't try to out-nerd me, your shebang advice isn't even POSIX compliant ! Use #!/usr/bin/env sh, there are systems (incl. NixOS) where there is no /bin/sh

    And Fish's scripting language leaks into the interactive shell. Setting variables via export a=b doesn't work, for example. I don't like that.

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  • [–] 2 points 1 month ago*

    Actually, /bin/sh is available on NixOS 🤓

    Yes, it's true that #!/usr/bin/env bash is a more reliable way to get bash, but you mentioned that you wanted a POSIX shell, not that you specifically needed bash, so #!/bin/sh will work on any system including NixOS.

    Also, export a=b does work in Fish. But you don't have to use it if you don't know how it works.

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