CRON is a time-based job scheduler used on Unix and Linux systems to automatically run commands or scripts at specific times or intervals.
CRON is commonly used to automate recurring tasks such as backups, system maintenance, data processing, and scheduled scripts.
CRON uses scheduling expressions to determine when a task should run. Each expression defines specific values for minutes, hours, days, months, and weekdays.
For example: 0 0 * * * – Runs a task every day at midnight.