Bash, the Bourne Again Shell, is the default command-line interpreter in most Linux distros.

Aliases

Append a string after each line

Arithmetic evaluation and errexit trap

Assign Output of Shell Command To Variable

Brackets

Built-in variables

cat

Commands

cut

Dangerous Commands

Find largest files

Find new files

Functions

IFS (internal field separator)

Helicopter Animation

Hello World

List files by size

List files excluding some files

Parse a line from a file

Quotes

Read a file (data stream, variable) line-by-line (and/or field-by-field)

Redirect Output To File, And Still Have It On Screen

Rename multiple files

rev

Run a program in the background

Scripts

ShellCheck

Shellshock

Store the return value and/or output of a command in a variable

tac