Run cron job every minute during specific hour during 30 minutes

2
votes

I know I can set up cron for every minute, like

* * * * *

for once a day AFAIK it would be (lets say on 2am)

0 2 * * *

for every 30 minutes 

0,30 * * * *

Now, is it possible to run cron job every minute, but during 30 minutes, once a day. For example I need the cron to run every day from 2am to 2:30, and during that time every minute.

thanks

1
cron

1 Answers

3
votes

Yes, sure. Use this:

0-30 2 * * *
^^^^ ^
 |   |
 |   on hour 2
on minutes from 0 to 30

Remember the format is as follows:

 +---------------- 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