Comments in bash scripts

What shells are in Linux

What is this shebang comment starting with #!

Defining constants in bash scripts

See which environment variables are set with `printenv`

Data types in bash scripts

Solving `permission denied` error for shell scripts

Check the version of bash

Check if a file exists with Bash

Get the current directory in a Bash script

Print the name of the running Bash script

Make multiple subdirectories at once with mkdir

Append lines to the end of a file with Bash

Check if a file is a symlink with Bash

Bash Tutorial - Starting with Bash shell basics