Shell script to display prime numbers

Bash script to display prime numbers.

Links that you may find important :

https://en.wikipedia.org/wiki/Prime_number
http://en.wikipedia.org/wiki/List_of_prime_numbers
http://en.wikipedia.org/wiki/2_%28number%29

Code :

echo 'Enter no'
read x
n=2
while [ $n -le $x ]
do
i=2
count=1

while [ $i -lt $n ]
do
if [ `expr $n % $i` -eq 0 ]
then
count=0
break
fi
i=`expr $i + 1`
done

if [ $count -eq 1 ]
then
echo "$n is Prime"
fi

n=`expr $n + 1`
done

Output :

2 is Prime
3 is Prime
5 is Prime
7 is Prime

Note : Leave a comment if you feel the program is incorrect and/or has errors and/or if the program and its output don't match. Please report about broken links.