cron is a scheduler that can run scripts at specified times
each user can run "crontab -e" to edit their crontab file.
The crontab entries are stored in "/var/spool/cron/tabs/". This is useful to know in case you need to recover settings.
# clean logs every 5 mins */5 * * * * /home/jurn/bin/clean_logs.sh
This will run "/home/jurn/bin/clean_logs.sh" every 5 minutes