Last updated on August 15, 2020 by Dan Nanni
cronjob for this task on my Linux system?
cron utility is the default task scheduler used in Linux. Using
cron, you can schedule a task (e.g., system backup, log rotation, vulnerability scanning, disk cleanup) to run it periodically or one-time at a specific time of hour, day, week, month, etc. The
cron tool is useful when you schedule a variety of regular maintenance jobs, such as periodic backup, rotating logs, checking filesystem, monitoring disk space, and so on.
cronJob from the Command Line
To add a
cron job, you can use a command-line tool called
Type the following command to create a new
cron job to run as the current user.
$ crontab -e
If you want a
cron job to run as any other user, type the following command instead.
$ sudo crontab -u <username> -e
You will be presented with a text editor window, where you can add or edit cron jobs. By default,
nano editor will be used.
Each cron job is formatted as follows.
<minute> <hour> <day-of-month> <month-of-year> <day-of-week> <command>
The first five elements specify the schedule for a task, and the last element is the (full-path) command or script to execute according to the schedule.
Here are a few useful
cron job examples.
Once you are done with setting up
cron job(s), press
Ctrl+x to save and quit the editor. At this point, newly added
cron jobs should be activated.
To browse existing
cron jobs of yours, use the following command:
$ crontab -l
cronJob from GUI
If you are in Linux desktop environment, you can use a GUI fronend for
crontab to add or edit a
cron job via a more user-friendly interface.
On GNOME desktop, there is GNOME Schedule (
On KDE desktop, there is Task Scheduler (