Running script via cron job on last Sunday of each month. 1

[amkipnis]

Hello, I have a need to run a script on last Sunday of the month. What is the best approach for this task. Any help is appreciated. Thanks. Alex.

 

[Ygor]

I think that you would need to run a script every sunday and determine how many days there are left in the current month. e.g using cal...

#!/usr/bin/ksh

set -A arr $(cal)
days_in_month=${arr[$((${#arr[*]}-1))]}
day_of_month=$(date +%d)
days_remaining=$((days_in_month-day_of_month))
if [[ $days_remaining -lt 7 ]]
then
   echo run the script
else
   echo not the last sunday
   exit
fi

 

[amkipnis]

Igor, thank you very much. I have tested this code and it worked fine.

 

[johngiggs]

amkipnis,

Something like this should work as well...

#!/usr/bin/ksh

TODAY=$(date +%d)
LASTSUN=$(cal | awk '{if (length>1) print $1}' | tail -1)

if [ $TODAY -eq $LASTSUN ]
then
continue
else
exit
fi

John

 

[amkipnis]

Thank you for a nice tip, John. This is very usefull solution.