Crontab scheduled task instance and crontab task instance

Crontab scheduled task instance and crontab task instance

Instance 1: Execute myCommand once every minute

* *** MyCommand

Instance 2: 3rd and 15th minutes per hour

3, 15 * myCommand

Instance 3: Run at 3rd and 15th minutes from eight o'clock A.M.

3, 15 8-11 *** myCommand

Instance 4: runs every two days, from eight o'clock A.M. to, at 3rd and 15th minutes.

3, 15 8-11 */2 ** myCommand

Instance 5: runs every 3rd and 15th minutes from eight o'clock A.M. to on Monday.

3, 15 8-11 ** 1 myCommand

Instance 6: restart smb at every night

30 21 ***/etc/init. d/smb restart

Instance 7: restart smb at on the 1st, 10th, and 22th of every month

45 4, 10, 22 **/etc/init. d/smb restart

Instance 8: restart smb every Saturday or Sunday

10 1 ** 6, 0/etc/init. d/smb restart

Instance 9: restart smb every 30 minutes between and every day

0, 30 18-23 ***/etc/init. d/smb restart

Instance 10: restart smb at every Saturday.

0 23 ** 6/etc/init. d/smb restart

Instance 11: restart smb every hour

**/1 ***/etc/init. d/smb restart

Instance 12: restart smb every hour between PM and PM.

0 23-7 ***/etc/init. d/smb restart