How to schedule a Unix shell script in crontab to run every 2nd Saturday(nth Day of the month)

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There is no direct way to schedule the script in crontab for nth day of every month. Which means suppose if you wanted to execute the shell script for every 2^nd Saturday or every 3^rd Monday, etc. (i.e: The execution occurrence will be one in a month; nth Sunday, Monday, Teusday, Wednesday, Thursday, Friday or Saturday) Crontab will not support this. You have to write your own code to execute this. A sample code is given below.

TODAY=`/bin/date +%d | cut -d"0" -f2`

DAY=`cal | awk {'print $7'} | xargs | /usr/bin/cut -d" " -f3`

#See if today matches the 2nd Tuesday of the month

if [ "$TODAY" -ne "$DAY" ] ; then

echo "Today is not Second Saturday"

else

echo "Today is 2nd Saturday. Please put your program code just below."

fi

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