How to setup a cron job to run every 45 minutes in Solaris 5.10

UNIX Solaris
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How to setup a cron job to run every 45 minutes in Solaris 5.10

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45 * * * *

3

it is not work its run every hour like 12:45, 13:45 ...

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0,15,30,45 * * * *

Your script will be called every 15 minutes. The script then needs to check if it is 45 minutes
since it was last run (by means of a counter, timestamp, etc.) and only continue if it is at the 45 minute interval.

5

We guess you need run the script at below time:

0:00, 0:45, 1:30, 2:15m 3:00, 3:45, etc.

So you need set 3 cronjobs.

0,45 0,3,6,9,12,15,18,21 * * * Your_script
30 1,4,7,10,13,16,19,22  * * * Your_script
15 2,5,8,11,14,17,20,23  * * * Your_script
6

You can try this

*/45 * * * * script_name

here */45 in minutes fields indicates in every 45 minutes.

7

does this technique */45 worked, did any one tested

8

kindly see the link below where you will find that the above technique is absolutely correct.

How to Create a Cron Job (Scheduled Task) for Your Website or Blog (thesitewizard.com)

look at the paragraph below:-

Alternate Hour or 3 Hourly Schedule

If you want something to run once every two hours, you will have to use the slash, "/", character in your field. 
The slash character is the "step" character. In the case of a two hourly schedule, 
your time component of your cron file will read:

0 */2 * * *

The second field, "*/2", means every alternate hour.

Similarly, if you want something to run every 3 hours, you can change that field to "*/3", and so on.

BR

9

It doesn't work in Solaris, and for that matter anywhere, I would imagine:

Linux:

# crontab -l
*/45 * * * * date >> /tmp/cr_data

# cat cr_data
Mon Aug 16 14:45:01 CEST 2010
Mon Aug 16 15:00:01 CEST 2010

Solaris (10):

"/tmp/crontabh2aOTC" 9 lines, 287 characters
*/45 * * * * date >> /tmp/cr_data
crontab: error on previous line; unexpected character found in line.
crontab: errors detected in input, no crontab file generated.
10

The '/' syntax is not supported in Solaris' cron implementation:

$ crontab -e
*/45 * * * * echo Hi
crontab: error on previous line; unexpected character found in line.
crontab: errors detected in input, no crontab file generated.

---------- Post updated at 15:08 ---------- Previous update was at 15:06 ----------

Oops, simultaneous post, scottn. :slight_smile: