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this post was submitted on 15 Nov 2023
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Programmer Humor
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Just don't call it with
#!/bin/sh. Because that's POSIX shell, not bash.but effectively it's bash, I think
/bin/shis a symlink to bash on every system I know of...Edit: I feel corrected, thanks for the information, all the systems I used, had a symlink to bash. Also it was not intended to recommend using bash functionality when having a shebang
!#/bin/sh. As someone other pointed out, recommendation would be#!/usr/bin/env bash, or!#/bin/shif you know that you're not using bash specific functionality.Still don't do this. If you use bash specific syntax with this head, that's a bashism and causes issues with people using zsh for example. Or with Debian/*buntu, who use dash as init shell.
Just use
#!/bin/bashor#!/usr/bin/env bashif you're funny./bin/bashwon't work on every system for example NixOS some other systems may have bash in /usr/bin or elsewhereNixOS didn't do /usr merge?
Binaries are not in
/usr/binor/binexcept for/bin/shand/usr/bin/env. Programs should not assume fixed paths for binaries and instead look for them in$PATH.