I like this and could use something like it, but you should use POSIX sh (/bin/sh) and not rely on Bash in the shebang as well as non-portable functionality it

I like this and could use something like it, but you should use POSIX sh (/bin/sh) and not rely on Bash in the shebang as well as non-portable functionality it introduces. This wouldn't work out of the box on FreeBSD. I recommend this tool: https://www.shellcheck.net/ https://www.shellcheck.net/