\section not not - negate the exit status of a job

\subsection not-synopsis Synopsis
<tt>not COMMAND [OPTIONS...]</tt>

\subsection not-description Description

\c not negates the exit status of another command. If the exit status
is zero, \c not returns 1. Otherwise, \c not returns 0.

\subsection not-example Example

The following code reports an error and exits if no file named spoon can be found.

<pre>
if not test -f spoon
	echo There is no spoon
	exit 1
end
</pre>