UNIX for Dummies Questions & Answers

I am a sql programmer, I don't know much about UNIX. I want to modify the existing unix script

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............
cd /home/location/file
set timing on
sqlplus user/$IDPW <<!
prompt RUNNING NEW QUARTER PROCESSING. PLEASE WAIT.
@/home/location/file/new_period.sql
prompt LOADING NEXT TABLES. PLEASE WAIT.
@/home/location/file/file_next.sql
!
echo "TABLES HAVE FINISHED LOADING."
echo "Check output listings: files.lst"

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With the following logic:

Get the system date
If system date month = February, May, August, November
prompt RUNNING NEW QUARTER PROCESSING. PLEASE WAIT.
@/home/location/file/new_period.sql
Else
prompt LOADING NEXT TABLES. PLEASE WAIT.
@/home/location/file/file_next.sql!
echo "TABLES HAVE FINISHED LOADING."
echo "Check output listings: files.lst"

Any help will be really appreciated.

Thank you.

I modified you request a little, so you could see results.

Code:

> month=$(date '+%m')
> echo $month
09

> if [ $month -eq 3 ] || [ $month -eq 6 ] || [ $month -eq 9 ] || [ $month -eq 12 ] ; then echo "end of quarter"; fi
end of quarter
>

Modify for the month numbers you want, and instead of an echo command substitute what you want to run.