Using cron with Drupal

Several of Drupal's modules, such as Search and Aggregator, require intervention in order to be kept up-to-date. This intervention can be automated by using some sort of scheduler. On Linux systems the cron utility can be used for this purpose.

Drupal provides a php script named cron.php which lives in the root of your Drupal site by default. When the cron.php script is executed, it will trigger those tasks that need to be performed. We can use cron to cause the cron.php script to be executed on a consistent schedule.

Here's what we did on our MandrakeLinux 10.1 system:

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Courtesy : http://evenhouseconsulting.com