ShutDown Script - Abort Shutdown

From: Mary (
Date: 06/25/04

Date: Fri, 25 Jun 2004 08:42:35 -0700

I need a shutdown script that will check for a file and if the file exists, prompt the user to continue or abort the shutdown.

My question is how do I abort the shutdown?
I know how to abort a shutdown that I have initiated with "shutdown -a"
but this does not work with a shutdown initiated from Start, Shutdown.