Cron jon schedule

[Fuad_1]

Hi,

Can I schedule a cron job to start every last Friday of each month?

Thanks.

[Peter Godron]

Hi,
crontab can't do it directly. However,for solution, see:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=371092

[Peter Godron · Accepted solution]

Fuad,
schedule your job to run every Friday and include this at the start of your code.

thanks to Cem Tugrul:

## get actual day
DAY=`date +"%d"`
## get the last friday of curren month
EXEC_DAY=`cal | awk 'NF >=6 { last = $6 }; END{ print last }'`

if [ $DAY -ne $EXEC_DAY ]
then
echo " - Not run because is not the last friday - "
exit;
fi

[A. Clay Stephenson]

Cron can't do this itself so one technique is to execute the cron script EVERY Friday and then let the script decide if it should do something or simply exit.

-----------------------------------------
#!/usr/bin/sh

typeset -i STAT=0
PATH=${PATH}:/usr/local/bin
export PATH

if [[ $(caljd.sh -M) -ne $(caljd.sh -M -n 7) ]]
then
echo "It's the last Friday; do your thing"
# run your command and set ${STAT} approriately to indicate exit status
else
echo "It ain't; do nothing"
fi
exit ${STAT}

----------------------------------------

Install the attached caljd.sh in /usr/local/bin and invoke a caljd.sh -u for full usage and examples. Basically the idea is that we compare the month of the current date and the month 1 week later to see if they differ.

[Fuad_1]

Thanks to all.