#!/bin/bash
pick=$((RANDOM % 20))
echo "Guess a number between 1 and 20"
read num1
if [ "$num1" -eq "$pick" ] ; then
        echo "Good guess!"
else
        echo "Guess again!"
        read num2
fi
if [ "$num2" -eq "$pick" ] ; then
        echo "Good guess!"
else
        echo "Guess again!"
        read num3
fi
if [ "$num3" -eq "$pick" ] ; then
        echo "Good guess!"
else
        echo "Guess again!"
        read num4
fi
if [ "$num4" -eq "$pick" ] ; then
        echo "Good guess!"
else
        echo "Sorry, you lose."
fi