Crontab Command Instances

writes date to time.log every 2 minutes (the following is an odd-minute execution)

*/2 * * * * Date >> ~/time.log

1-59/2 * * * * Date >> ~/time.log

23:30 minutes a day to restart Apache

* * * *   /etc/init.d/apache2 restart

23:30 points per month for the 1,10,20, restart Apache. 1,10,20 * */etc/init.d/apache2 restart

23:30 restart Apache per month from 1 to 15th

1-15 * */etc/init.d/apache2 restart

Apache starts every 30 minutes from 23 o'clock to 6 in the morning.

*/30 23-7 * * */etc/init.d/apache2 restart

0,30 23-7 * * */etc/init.d/apache2 restart

0-59/30 23-7 * * */etc/init.d/apache2 restart

Crontab Command Instances