July 7, 2020Have you ever thought how good it would be to have a help message for your shell script that you wrote a month ago and already forgot what it is supposed to do? Yeah, there is always a way to show a message using cat (meow) or a bunch of echo calls. But there is a neat trick. Add your message with all the required information on top of your file, just right after the shebang. #!/bin/ba