Reverse Of a No.

#!/bin/sh

echo -n "Enter any no to find Reverse :  "
read  n
p=$n
rev=0
while [ $n -gt 0 ]
do
z=$(($n%10))
n=$(($n/10))
rev=$(($(($rev*10)) + z))
done
echo " .............reverse of the no. is : ........   : $rev"
exit 0

Output :