Shell Script Program To Find prime numbers in given range

clear

echo enter a range
read range

echo 2 is a prime number

j=3

while test $j -le $range
do
	i=2
	x=`expr $j - 1`

while test $i -le $x
do
	if [ `expr $j % $i` -ne 0 ]
	then
		i=`expr $i + 1`
	else
		break
	fi
done

if [ $i -eq $j ]
then
	echo $j is a prime number
fi

j=`expr $j + 1`

done

echo these are the prime numbers in this range

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