Early versions of cron, Version 7 Unix and 32V, made their services only to the super-user of the operating system (root). With the release of Unix System V and the multi-user cron, these services were extensive to all account-holding users of the system.

Two different modes you can use the cron job:

• Standard – This mode provides range of pre-set options we can choose and set the cron job for our need.

• Advanced (Unix Style) – It provides the regular cron options ie, Unix style cron options to set the cron job.

To add or change a cron job:

1. On the home page click on the Cron jobs button.

2. If you desire to use the Standard mode, click on the Standard button.

• Enter the e-mail address to send the results of the cron job.

• In run field enter the command the you want to run in the Command.

• Choose the one option from each of the available lists.

• Then click on the Save Crontab button now your cron job has now been added or updated.

If you desire to use the Advanced mode, click on the Advanced button.

• First enter the times for the cron job in the Minute, Hour, Day, Month, or Weekday fields.

• Then provide the cron job script in the Command field.

• Then click on the Commit Changes button now your cron job has been added or updated.