cron job that will never execute

Question

Is there any way to create a cron expression for not running the job at all. I though of using this expression :

0 0 0 1 1 ? 3099

Answer 1

Comment it out — put # sign in front of it. Very useful, especially if you're afraid you'll forget about your changes by the year 3099.

Another possibility is to make it execute dummy command, like true rm -rf /.