Set up Cron Job Linux is not a difficult task.At first, you have to know what is a Cron. Cron is a time-based job scheduler in Linux operating systems.
you can use the cron to schedule jobs (scripts,commands or pretty much anything) to run periodically at a predefined times, dates, or intervals repeatedly.
You can set Cron Job in the crontab file found inside the /etc folder in your file system.
Sudo gedit /etc/crontab
The Cron tab file have a syntax, as follows
# Minute Hour Day of Month Month Day of Week Command
# (0-59) (0-23) (1-31) (1-12 or Jan-Dec) (0-6 or Sun-Sat)
12 12 25 * * /home/execute.sh
Where execute.sh is the Bash command file to execute.
Example:
17 * * * * root cd / && run-parts –report /etc/cron.hourly
25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts –report /etc/cron.daily )
47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts –report /etc/cron.weekly )
52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts –report /etc/cron.monthly )
Also, you can put your sh file in any one of these folders, it will execute.
/etc/cron.daily, /etc/cron.hourly, /etc/cron.monthly or /etc/cron.weekly
If you want to repeat a job in every 10 minutes, follow this
*/10 * * * * /home/execute.sh
Also, if you want a user interface to set up Cron Job you can try KDE’s Task Scheduler (kde-config-cron)
Install kde-config-cron from the Software Centre or smply use the command
It can be used to manage both personal and system Crontabs.
And you can access it from System Settings in the Task Scheduler module.
However, the KDE Task Scheduler will only work better in KDE Desktop’s.
If you are using Gnome Desktop or non KDE system you can use gnome-schedule.
$ sudo apt-get install gnome-schedule
You can use the commad line tool crontab -l to look at the currently installed cron jobs.
Note:Setuping cron job in linux is not a complex process.And, also please keep this in mind do not setup too much complex process at the same time.