What Are Cron Jobs? Setup Guide for cPanel and DirectAdmin

Understanding Linux Cron Jobs

Cron Jobs automate repetitive administrative tasks (database maintenance, queue processing, currency sync) at specified temporal intervals.

Crontab Timing Syntax

* * * * * command to execute
┬ ┬ ┬ ┬ ┬
│ │ │ │ └──── Day of week (0-6) (0=Sunday)
│ │ │ └────── Month (1-12)
│ │ └──────── Day of month (1-31)
│ └────────── Hour (0-23)
└──────────── Minute (0-59)

Executing PHP Scripts in cPanel

/usr/local/bin/php -q /home/username/public_html/cron.php >/dev/null 2>&1

Optimizing WordPress wp-cron

Add define('DISABLE_WP_CRON', true); to wp-config.php and trigger WordPress cron via system cron every 30 minutes to boost site performance.