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Linux Beginner

What is Cron Job?

A scheduled task in Unix-like systems that runs automatically at specified times or intervals.

Cron is a time-based job scheduler. Users define tasks in a crontab file using a specific syntax: minute, hour, day of month, month, day of week, followed by the command. For example, "0 2 * * * /backup.sh" runs a backup script at 2 AM daily.

Cron is essential for system maintenance, log rotation, automated backups, and any recurring task.

Related Terms

SELinux
Security-Enhanced Linux — a mandatory access control system that confines programs to minimum required privileges beyond standard file permissions.
RAID
Redundant Array of Independent Disks — a technology combining multiple physical drives into a single unit for performance, redundancy, or both.
Systemctl
The primary command for managing systemd services, including starting, stopping, enabling, and checking service status.
File Permissions
A security mechanism that controls who can read, write, or execute files and directories in Unix-like systems.
Logrotate
A utility that manages automatic rotation, compression, and removal of log files to prevent disk space exhaustion.
Mount Point
A directory in the filesystem where a storage device or partition is attached and made accessible.
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