In the past few weeks, I realized I needed another fairly specialized script for file renaming, but this time ... and notice the built-in shell notation of $(( )) for mathematical calculations.

It isn’t an uncommon scenario. The obvious answer is to create an archive — a zip or tar file, maybe — and include a shell script that you have to tell the user to run after unpacking.

BASH is a Unix shell and command language which can run Shell Script files. You do not need to install Ubuntu or any other Linux Distros unless your scripts need the ...