#!/usr/bin/ksh

until [[ $answer = "Y" ]] || [[ $answer = "N" ]]
do
        echo "Do you want to start the process 1-5 Y/N?"
        read answer
        answer=`echo $answer | tr [:lower:] [:upper:]`
        case $answer in
           Y|YES)
                answer=`echo $answer | cut -c1`
                # /usr/home/myhome/script.ksh
                print "Process 1-5 Started. Done."
                ;;
           N|NO)
                answer=`echo $answer | cut -c1`
                print "Process 1-5 Not Started. Exiting Now"
                ;;
                
           *)
                print Unexpected Input: $answer  Retrying
                ;;
        esac

done