[nickysielicki]

See also: https://github.com/nhoffman/argparse-bash

A great option when you're stuck with an old crusty script that you don't want to completely rewrite in python, but do want to clean up enough so that you can call it with `-h` and remember how to use it a few months in the future.

Unfortunately, this won't help you if you're on embedded where python isn't in the base system.