Cron

Cron is the Unix-like system daemon that automates scheduled command execution (jobs) via a time-based scheduler.

Cron is your core utility for hands-off system maintenance: it executes commands or scripts at precise, recurring intervals. Jobs are defined in a configuration file, the `crontab`, which the `crond` daemon checks every minute. The schedule uses a five-field syntax—Minute, Hour, Day of Month, Month, Day of Week—like `0 2 * * *` for a daily script run at 2:00 AM. This tool is essential for tasks like log rotation, backups, and system monitoring, ensuring critical operations run reliably without manual intervention.

https://man7.org/linux/man-pages/man8/cron.8.html