Korn Shell Programming by Example

true

Official Description

Returns success status.

Syntax

true

Options

None

Oddities

You can use true when you need a command but don't want it to perform any processing.

It's available as a built-in in ksh93 and beyond.

Example

$ true                       # Returns success status
$ print $?
0
$ false                      # Returns failure status
$ print $?
1
$
$ if true                    # Tests to see if true returns success
> then
> print "Must be true"
> else
> print "Must be false"
> fi
Must be true                 # It does
$