I send parameters in the following format of the date, it will always be the last date of the month in the format DD-MON-YY ex: '31-JAN-08','30-APR-08'. I need to convert this 200801 and 200804. I need a simple easy shell script that can do this.

Any help will be appreciated

TIA
Covina

#!/bin/ksh

# This korn shell function receives a date of the format
# 31-JUN-08 and returns a string YYYYMo
function yrmon_string
{
typeset -2Z mm
typeset -2Z yr
# parse the argument into $1, $2, $3
set - $(IFS="-"; echo $1)
yr=$3
case $2 in
   "JAN") mm=1;;
   "FEB") mm=2;;
   "MAR") mm=3;;
   "APR") mm=4;;
   "MAY") mm=5;;
   "JUN") mm=6;;
   "JUL") mm=7;;
   "AUG") mm=8;;
   "SEP") mm=9;;
   "OCT") mm=10;;
   "NOV") mm=11;;
   "DEC") mm=12;;
   *)  echo "error"
       exit ;;
esac
echo "20"${yr}${mm}
} # end function

dstr=31-FEB-09

retstr=$(yrmon_string $dstr)
echo $retstr