* The crontab is used to shedule recurring events
* Crontab files are stored in /var/spool/cron , which is not accessible by non-previleged user
* The crontab can either be edited in the current directory and installed by using it as arguement to crontab or by using the -e option
Setting the cron job
> Suppose you need to create a directory called data on 22 november at 8:20, then i will put the following enteries in the configuration file
> To run the mkdir command, you have to find its path first
# whereis mkdir
# crontab -eu vinod <-- it will open vi editor for user vinod
20 8 22 11 * /sbin/mkdir data
> save and exit
# service crond restart
# chkconfig crond on
> If you wanna remove the cronjob for user vinod
# crontab -r vinod
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