Shell program to show palindrome of a number

Code Section :

clear
echo " Enter the number "
read n
number = $n
reverse = 0
while [$n -gt 0]
do
a = 'expr $n%10'
n = 'expr $n/10'
reverse = 'expr $reverse \*10 +$a'
done
echo $reverse
if [$number -eq $reverse]
then
echo "Number is palindrome"
else
echo "Number is not palindrome"
fl

Shell programming to swap two values

 Programming :

clear

echo " Enter value for x  "

read x

echo " Enter value for y "

read y

echo " Before swap; x=$x and y=$y "

z=$x

x=$y

y=$z

echo " After swap, x=$x and y=$y "