Write a shell program to generate prime number in a given Range 

#!/bin/bash

read -p "Enter start (2-x)>> " start
read -p "Enter end (2-x)>> " end

for((i=$start;i<=$end;i++))
do
	flag=0
	for((j=2;j<$i;j++))
	do
		if [ $(( $i%$j )) -eq 0 ]
		then
			flag=1
		fi
	done
	if [ $flag -eq 0 ]
	then
		echo "$i "
	fi
done