Help with shell script on Month Changing Logic

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http://www.unix.com – Hi Unix Experts, Happy Morning to all !! :) I am new to UNIX Shell Scripting and at my begineer level. To get acquainted to scripting, I am trying to create a script. The details/requirements of my script was to create a script with month changing logic in it so that on every 6th Working day, it calls one more script that will process certain data. I have just started to put my heads on it. Created a table excluding the public holidays so that 6th Working day is obtained correctly. Now I am struck in bringing the month changing logic in it. Here is my try. Code: e1=`sqlplus -s ${UNAM (HowTos)