Setting up cron jobs
In Drupal, cron jobs are used to schedule and perform various maintenance tasks on your site. Within a Drupal site, cron jobs trigger several important tasks, such as building the search index for your site, and generating and updating log files. Frequently, other modules will also set up actions that are triggered by cron jobs.
The name cron job comes from the Linux utility cron. It is an automated scheduling program installed on Linux systems. For an overview of cron, visit http://en.wikipedia.org/wiki/Cron.
Drupal 7 now ships with a module for automating cron jobs. To configure the module, click on Configuration | Cron, or navigate to admin/config/system/cron.
The configuration options allow you to specify how frequently cron should run. For most learning sites, cron should run every two to three hours. Since Drupal's default setting is 3 hours, no further configuration is necessary!
If you need to run cron jobs more frequently than the module allows, you can also configure...
