What are common shebangs?

Common shebangs include:

1. Bash:

   #!/bin/bash

2. Python:

   #!/usr/bin/env python3

3. Perl:

   #!/usr/bin/perl

4. Ruby:

   #!/usr/bin/env ruby

5. Node.js:

   #!/usr/bin/env node

6. Sh (Bourne shell):

   #!/bin/sh

7. PHP:

   #!/usr/bin/env php

Using #!/usr/bin/env is a common practice as it allows the system to find the interpreter in the user's PATH, making scripts more portable across different environments.