Cron Job on first Monday of every month

[sreddy]

How to setup Cron Job on first Monday of every month ?? -Thanks

[pipo]

first you must have the right to have a crontab, or login as root, then crontab -e (edit), and you add your line :
min hour day_of_month month weekday
to run something every first monday of every month at 8:15, just do :

15 8 1-7 * 1 command

that is to say you'll launch your command every monday that is between the 1st and 7th day of the month, that is to say the first monday ...

[sreddy]

Got you. Thx

[marist89]

Anybody got another idea for this? On Solaris, this entry would run at 8:15 on Monday's AND days 1-7.

[svk]

I guess, crontab entries are "OR"ed.
So, 15 8 1-7 * 1 command will execute the 'command' on all Mondays and first 7 days of a month.

So, unless there is a better way, the 'command' will have to take care of checking that "it really is first Monday of the Month".

[molonede]

This was interesting question so I posted it on unix.com, here is what Perderabo came up with....

This usual solution is something like, first write a wrapper script that will run somecommand only if the day of the month is 7 or less:


code:--------------------------------------------------------------------------------
#! /usr/bin/ksh
day=$(date +%d)
if ((day <= 7)) ; then
exec somecommand
fi
exit 1
--------------------------------------------------------------------------------


Then run the wrapper every Monday: "0 0 * * 1 wrapper".

[marist89]

I was afraid of that. I think the "tacky" police will be hunting me down...

[jm]

We did same way,
crontab, we scehdule daily base
2 0 * * * myjob

in the shell script:

myjob code---------------------------------------
wkdate=`date +%w`
DD=`date +%d`

# Mon - Fri, & Sun run daily process
# Saturday run weekly process except:
# the 1st Saturday of each month run monthly process

case $wkdate in
6)
if [[ $DD -lt 8 ]] ; then
echo run monthly process
./month_process.sh
else
echo run weekly process
./weekly_process.sh
fi
;;
*)
echo run daily process
./daily_process.sh
;;
esac
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