What is shebang?

Shebang is a special line at the beginning of a script that indicates to the operating system which interpreter to use to execute the file.

It starts with the characters #!, followed by the path to the interpreter, for example:

#!/bin/bash

This means that the script should be run using Bash.

Shebang allows scripts to be run as executable files without explicitly invoking the interpreter:

./script.sh

In Unix-like systems, shebang helps determine the script's execution environment.