How to add a shebang to a bash script

Description

A shebang or bang is a line of text at the top of a Bash script which tells the Unix operating systems which interpreter to use.

The most command one you will see when you’re doing shell scripting looks like this:

#!/bin/bash

If you’re producing Bash scripts, remember to add these to the top of your files to inform the operating system what is the correct interpreter to use.

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