sum-of-digits.sh

# Write a script to calculate the sum of digits of the given number.

echo "Enter a number"
read num

sum=0

while [ $num -gt 0 ]
do
    mod=$((num % 10))    #It will split each digits
    sum=$((sum + mod))   #Add each digit to sum
    num=$((num / 10))    #divide num by 10.
done

echo $sum