⊕ Usage

unset [ -v ] variable ...
unset -f function ...

⊕ Purpose

 

To remove variables and functions from the current shell.

⊕ Major options

 

-f

 

Unset (remove) the named functions.

 

Unset (remove) the named variables. This is the default action with no options.

⊕ Behavior

 

With no options, arguments are treated as variable names and said variables are removed. The same occurs with the -v option. With the -f option, arguments are treated as function names and the functions are removed.