The unalias built-in undefines aliases.
Syntax
- 
unalias name…
- 
unalias -a
Description
The unalias built-in removes the definition of the aliases specified by operands.
Options
- 
-a
- 
--all
- 
Undefine all aliases. 
Operands
- name
- 
The name of an alias to be undefined. 
Exit status
The exit status of the unalias built-in is zero unless there is any error. It is an error to specify the name of a non-existing alias as name.
Notes
The unalias built-in is a semi-special built-in.