alias ALIAS_NAME='COMMAND' unalias ALIAS_NAME
If you define an alias using the same name as an existing command name, you can run that command unaliased if you precede its name with a backslash.
$ alias ls='ls -l' $ \ls

• Create an alias.
  $ alias list='ls -l'
  
• Remove an alias.
  $ unalias list
  
• List all aliases.
  $ alias