Are you familiar with the Alias command?

An important feature of the shell is the possibility of creating nicknames or shortcuts for commands. It can be used to simplify commands with many options or execute several processes in sequence.

The alias creates these shortcuts:

# alias psuira=’ps aux |grep uira’

# pust

root 1200 0.0 1.3 5040 1752? At 10:17 12:00 sshd: listen @pts /4

uira 1201 0.0 1.3 2872 1656 pts/4 S 10:18 0:00 -bash

root 2657 0.0 0.4 1764 552 pts/4 S 21:19 0:00 grep uira

In this example, the nickname psuira corresponds to the ps aux | grep uira commands.

The list of nicknames can be displayed with the alias command without any parameters:

# alias

alias +=’pushd. ‘

alias -=’popd’

alias.. =’cd.. ‘

alias… =’cd../.. ‘

alias beep=’echo -in “ 007” ‘

Alias dir=’ls -l’

alias l=’ls -AlF’

alias la=’ls -la’

alias ll=’ls -l’

alias ls=’/bin/ls $LS_OPTIONS’

alias ls-l=’ls -l’

alias lsw=’ls -l |more’

alias md=’mkdir -p’

alias o=’less’

alias psuira=’ps aux |grep uira’

alias rd=’rmdir’

alias rehash=’hash -r’

alias unmount=’echo “Error: Try the command: umount” 1>&2; false’

alias which=’type -p’

alias you=’yast2 online_update’

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Uirá Endy Ribeiro

Uirá Endy Ribeiro is a Software Developer and Cloud Computing Architect with a 23-year career. He has master's degrees in computer science and fifteen IT certifications and is the author of 11 books recognized in the IT world market. He is also Director at Universidade Salgado de Oliveira and Director of the Linux Professional Institute - LPI Director's Board.