Not to be funny, but is POSIX scripting even still relevant? It's well understood that they should only be used for quick and simple tasks, and anything more serious or demanding should be done using something like python instead. But these quick and dirty tasks are very easy for LLM coding agents to do in python. I used to have dozens of shell scripts, each no more than tens of lines long, in my ~/bin/, but I had an LLM rewrite all of them in python, adding proper argument handling, --help messages and error handling too in the process. I sincerely don't think I'll ever write another bash script again.

I write all my scripts in bash. I'm not learning a new language.

That's not a problem since it's available and when #/bin/bash or env bash is there, it just works.

My bash scripts are stored in a folder on my PATH, so it all just works.