Cron

Cron is a time-based job scheduler in Unix-like operating systems that automates the execution of commands or scripts at specified intervals. It uses a configuration file called a crontab to define scheduled tasks, which run in the background without user intervention. This tool is essential for automating repetitive system maintenance, data backups, and application tasks.

Also known as: cron job, crontab, cron daemon, cron scheduler, Unix cron

Why learn Cron?

Developers should learn Cron to automate routine tasks such as log rotation, database backups, and periodic data processing, which improves efficiency and reduces manual errors. It is particularly useful in server environments, DevOps workflows, and applications requiring scheduled updates or notifications, ensuring reliable and timely execution of critical operations.

Learning Resources

• docs: Cron Wikipedia Page
• tutorial: Crontab Guru - Interactive Crontab Editor
• tutorial: Linuxize Cron Tutorial
• tutorial: DigitalOcean Cron Guide
• video: YouTube: Cron Jobs for Beginners