Shell aliases are simple way to create new commands. They overlap with shell functions, which are more versatile and should be preferred.
Create an alias:
# alias ls='ls --color=auto'
When typing “ls”, it will interpret it as typing “ls –color=auto”. Let’s say we don’t want to use alias, but also don’t want to remove it either. We can simply tell shell to omit alias by using four options:
- Use command built-in. For example, typing “command ls” would omit ls alias.
- Use full path of the command. For example, type /bin/ls.
- Add \ anywhere in the command name. For example, type \ls or l\s and alias will be omitted.
- Quote the command. For example, type “ls” or ‘ls’
# alias now='date' # now Sun Jan 31 17:11 CET 2021 # unalias now # now - bash: now: command not found
List all aliases:
# alias -p