Scheduling jobs to run daily, weekly or monthly with Cron

Cron syntax and valid values: ```bash # +---------------- minute (0 - 59) # | +------------- hour (0 - 23) # | | +---------- day of month (1 - 31) # | | | +------- month (1 - 12) # | | | | +---- day of week (0 - 6) (Sunday=0 or 7) # | | | | | * * * * * command to be executed ``` Below are a few examples on how to run a script every 10 minutes, every 30 minutes, every hour, daily, weekly, monthly. Execute **crontab -e** and add the following (see **man crontab**): ```bash # Every 10 minutes */10 * * * * /home/belsebub/delete_old_stuff.sh # Every 30 minutes */30 * * * * /home/belsebub/delete_old_stuff.sh # Every 60 minutes */60 * * * * /home/belsebub/delete_old_stuff.sh # Every day at 00:00 00 00 * * * /home/belsebub/delete_old_stuff.sh # Every saturday at 00:00 00 00 * * 6 /home/belsebub/delete_old_stuff.sh # First day of every month at 00:00 00 00 1 * * /home/belsebub/delete_old_stuff.sh ``` On Debian the configuration goes to **/var/spool/cron/crontabs/username**.