UNIX for Dummies Questions & Answers

We have a cron job which runs at 2 different times on a daily basis

I need to change the timings now

currently its runs at 12 and 3pm

I need to make the 3pm to some 4:30PM...


Please help.

The cron line is white space separated:

Code:

MM HH DOM MO DOW Command line but watch for cron meta like '%' in date '+%Y...'

so, you want to find your line, which will be like this:

Code:

0 15 * * * your_command

and change the first two fields for 30 and 14.

Now, often both times are combines using the ',', so maybe it will be 12,15. You now need two lines, since you need two minutes and two hours. This would run 4 times: 1200, 1230, 1400, 1430

Code:

0,30 12,14 * * * your_command

Dup the line (yyp) and make one for '0 12' only and one for '30 14'.

Dint understand what u meant by

Dup the line (yyp) and make one for '0 12' only and one for '30 14'.

---------- Post updated at 03:53 PM ---------- Previous update was at 03:49 PM ----------

Did u meant, i shud put 2 cron jobs running at diff times

1. 0,12 * * * your_command
2. 30,14 * * * your_cpmmand

Yes, I think that was the intention... have two jobs (there's no other way to do what you are trying - unless, of course, you can run them at 12 and 16 hours (i.e. in the same minute on the hour))

Yes! I leave a little room for the student to expand, sometimes too much, but you got it, except the comma is for two times in the same column, minute of hour in your lines. You are missing a column: MOH HH DOM MM DOW Command-line. For instance, "1 2 3 4 5 xx" says "at 2:01 of April 3 when it is a Friday, run xx":

0 12 * * * Yours

Thanks a lot...I got it

All 5 and it runs 4 times in 28 years, more or less.