Shell script

Basics

Environment variables

How to read a value from user

Special variables

IFS effects on special variables

How to use 'cat'

How to use 'awk'

How to use 'sed'

How to use 'cut'

How to use 'uniq'

How to use 'sort'

How to use 'grep'

How to use 'find'

How to use 'jq'

How to use 'trap'

How to use 'crontab'

How to use 'let'

How to use 'wait'

How to use 'sleep'

How to use 'tee'

How to use 'xargs'

References