Basic front end with dialog/Xdialog

This script displays a simple YES/NO box.

#!/bin/bash
DIALOG=${DIALOG=dialog}

$DIALOG --title " My first dialog" --clear \
--yesno "Hello , this is my first dialog program" 10 30

case $? in
0)
echo "Yes chosen.";;
1)
echo "No chosen.";;
255)
echo "ESC pressed.";;
esac

A screen-shot of the above program is given below.