Unix – Show, Create and Delete Command Alias

Define an Alias

The first example causes ls -l to be executed when the command ll is entered:

alias ll ls -l

Show all defined Alias

alias

Show Alias for specific Alias

alias ls

Alias File – .bash_aliases

The alias file located in ~/.bash_aliases is executed on startup.
Below is an example of .bash_aliases.

cat ~/.bash_aliases
alias pj="ps -fA|grep java"
alias rd="rm –rF "
alias home="cd ~ "
alias +='pushd .'
alias -='popd'
alias ..='cd ..'
alias ...='cd ../..'
alias beep='echo -en "\007"'
alias dir='ls -l'
alias home='cd ~ '
alias l='ls –alF --color=auto '
alias la='ls -la'
alias ll='ls -l'
alias ls='/bin/ls $LS_OPTIONS'
alias ls-l='ls -l'
alias mc='. /usr/share/mc/bin/mc-wrapper.sh'
alias md='mkdir -p'
alias o='less'
alias rd='rmdir'
alias rehash='hash -r'
alias unmount='echo "Error: Try the command: umount" 1>&2; false'
alias which='type -p'
alias you='su - -c "/sbin/yast2 online_update"'

Executing an Alias file

~/.bashrc

Delete an defined Alias

alias ll=