Hi there can anyone help me
here is my code

echo "Type in a positive number"
read X
I=2
while [ $(( $X > $I )) ]
do
if [ $(( $X % $I == 0)) ]
then
echo "It is not prime"
break
else
if [ $(($X - $I == 1)) ]
then
echo "It is  prime"
break
else
I=$(( $I + 1))
fi
fi
done

Hi

The closing brackets were placed at the wrong places:

echo "Type in a positive number"
read X
I=2
while [ $X>$I ]
do
    if [ $(($X%$I)) == 0 ]
    then
    echo "It is not prime"
    break
    else
    if [ $(($X-$I)) == 1 ]
    then
    echo "It is  prime"
    break
    else
    I=$(( $I + 1))
    fi
    fi
done

Thanks for answering I tried to remove all the spaces in arithmetic expressions but still it generates wrong answer

Hi

Its not just about spaces, its about the brackets as mentioned earlier. Try running the corrected code which i pasted, it works fine.

Guru

oh, get my mistake