How to use the alias command in Linux

The alias command lets you give your own name to a command or sequence of commands. You can then type your short name, and the shell will execute the command or sequence of commands for you.

List Currently Defined Aliases in Linux

alias cp='cp -i'
alias egrep='egrep --color=auto'
alias fgrep='fgrep --color=auto'
alias grep='grep --color=auto'
alias l.='ls -d .* --color=auto'
alias ll='ls -l --color=auto'
alias ls='ls --color=auto'
alias mv='mv -i'
alias rm='rm -i'
alias which='alias | /usr/bin/which --tty-only --read-alias --show-dot --show-tilde'

Creating a Linux alias is very easy. You can either enter them at the command line as you're working, or more likely, you'll put them in one of your startup files, like your .bashrc file, so they will be available every time you log in.

Jul  1 13:28 .bash_history
Dec 29  2013 .bash_logout

To remove an alias added via the command line can be unaliased using unalias command.

-bash: l: command not found

The syntax for the alias command is as follows:

Usage: 
  alias [-p] [name[=value] ... ]

OPTIONS:
-p
This option prints all the defined aliases is resuable format.