------------------------------------------------------
 * * * * * * * * Main Menu * * * * * * * * * * *
------------------------------------------------------
Please Select An Option given below.

[1] - TEST1

[2] - TEST2

[3] - TEST3

[4] - ALL

[q] - Quit

------------------------------------------------------
Enter your menu choice [1-4]:1,2
TEST1

while true; do
echo " "
clear
echo "------------------------------------------------------"
echo " * * * * * * * * Main Menu * * * * * * * * * * * "
echo "------------------------------------------------------"
echo "Please Select An Option given below."
echo " "
echo "[1] - TEST1"
echo " "
echo "[2] - TEST2"
echo " "
echo "[3] - TEST3"
echo " "
echo "[4] - ALL"
echo " "
echo "[q] - Quit"
echo " "
echo "------------------------------------------------------"
echo -n "Enter your menu choice [1-4]:"

read CHOSEN_KEY

OIFS=$IFS
IFS=","
set -- $CHOSEN_KEY
IFS=$OIFS

while [ $# -ge 1 ]
do
    CHOSEN_KEY=$1
    shift
    case "$CHOSEN_KEY" in
       1) echo TEST1
          if [ $CHOSEN_KEY -eq 1 ];
          then
          echo "You have Select $CHOSEN_KEY , now please select $CHOSEN_KEY Version"
          echo "[a] - Version 6"
          echo "[b] - Version 7"
          echo "Please enter your option: "
          read "CHOSEN_VER"
          if [ $CHOSEN_VER == a ];
          then
          echo " You have chosen Version 6 installation "
          elif [ $CHOSEN_VER == b ];
          then
          echo " You have chosen Version 7 installation "
          else
          echo "Select proper category"
          fi
          fi
          exit ;
          break;;

       2) echo TEST2
          if [ $CHOSEN_KEY == 2 ];
          then
          echo "You have Select $CHOSEN_KEY , now please select $CHOSEN_KEY Version"
          echo "[a] - Version 6"
          echo "[b] - Version 7"
          echo "Please enter your option: "
          read "CHOSEN_VER"
          if [ $CHOSEN_VER == a ];
          then
          echo " You have chosen Version 6 installation "
          elif [ $CHOSEN_VER == b ];
          then
          echo " You have chosen Version 7 installation "
          else
          echo "Select proper category"
          fi
          fi
          exit ;
          break;;

       3) echo TEST3 ;;
       4) set 1 2 3 $@ ;;
       q) exit 0 ;;
       *) echo Invalid option $CHOSEN_KEY ;;
    esac
done
sleep 2
done