Shebangs (#!) have been around for quite a long time. It's actually really handy to be able to write a script that you can execute as a command. See https://e

Shebangs (#!) have been around for quite a long time. It's actually really handy to be able to write a script that you can execute as a command. See https://en.wikipedia.org/wiki/Shebang_(Unix) https://en.wikipedia.org/wiki/Shebang_(Unix)