The Cron Job Interface allows you automate tasks by running commands or scripts on your site at scheduled times, daily, weekly, or whenever you choose. For example, you could create a cron job to automatically delete temporary files each week, helping to free up disk space.
Note: Exercise caution when scheduling Cron Jobs. We recommend that you allow enough time between cron jobs for the previous cron job to complete.
If you schedule them to run too often, the server could start another cron job before the last cron job ends. This duplication could degrade Server or website performance.
For more information, see Red Hat’s Scheduling a Cron Job documentation.