NAME

unset - unset values and attributes of variables and functions

SYNOPSIS

unset [flags] name...

DESCRIPTION

For each name specified, unset unsets the variable, or function if -f is specified, from the current shell execution environment. Readonly variables cannot be unset.

FLAGS

-n: If name refers to variable that is a reference, the variable name will be unset rather than the variable it references. Otherwise, is is equivalent to -v.
-f: aname refers to a function name and the shell will unset the function definition.
-v: name refers to a variable name and the shell will unset it and remove it from the environment. This is the default behavior.

EXIT STATUS

0: All names were successfully unset.
>0: One or more name operands could not be unset or an error occurred.

AUTHOR

David J. Korn, et. al.

COPYRIGHT

2019, David J. Korn, et.al.