Time Scheduler Notation:

Standard

Minute Hour DayOfMonth Month DayOfWeek
* = any value
, = value list separator
– = range of values
/ = step values (Increments)

Non-Standard

@yearly
@annually
@monthly
@weekly
@daily
@hourly
@reboot

Examples

Run a cron once every minute

* * * * * /path/to/script
*/1 * * * * /path/to/script

Run cron every 5 minutes

*/5 * * * * /path/to/script

Run cron every minute starting at 1:00 and ending at 2:00

* 1 * * * * /path/to/script

Run cron at 2:00AM and 3:00PM

0 2,15 * * * /path/to/script

Run cron every Monday at 4:30AM

30 4 * * 1  /path/to/script

 

Commands:

Open Cron Schedule for the current user

crontab -e