"AIX cron job is running everyday instead of on a particular day"

Post #303023467 by MadeInGermany on Monday 17th of September 2018 12:48:23 PM

That means cron treats the dom field and the dow field as OR.
To make an AND, you put one field into the crontab and make your script exit on the other condition. For example
Code:
45 4 * * 0 /home/user1/myscript.sh >/dev/null 2>&1 # run this every sunday

And at the beginning of myscript.sh you put
Code:
# exit if day-of-month is not 15..21
dom=`date +%d`
[ $dom -ge 15 -a $dom -le 21 ] || exit
# the real script follows
...

Or, the other way round:
Code:
45 4 15-21 * * /home/user1/myscript.sh >/dev/null 2>&1 # run this every day 15..21

And at the beginning of myscript.sh you put
Code:
# exit if today is not Sunday
dow=`date +%w`
[ $dow -eq 0 ] || exit
# the real script follows
...


Last edited by MadeInGermany; 09-17-2018 at 03:01 PM..
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