sum of all digits in a given number using Shell Script
By: Dorris
This shell script prints the given number's sum of all digits, For eg. If no is 123 it's sum of all digit will be 1+2+3 = 6.#!/bin/bash
#
# Linux Shell Scripting Tutorial 1.05r3, Summer-2002
#
# Written by Vivek G. Gite <[email protected]>
#
# Latest version can be found at http://www.nixcraft.com/
#
# Algo:
# 1) Input number n
# 2) Set sum=0, sd=0
# 3) Find single digit in sd as n % 10 it will give (left most digit)
# 4) Construct sum no as sum=sum+sd
# 5) Decrment n by 1
# 6) Is n is greater than zero, if yes goto step 3, otherwise next step
# 7) Print sum
#
if [ $# -ne 1 ]
then
echo "Usage: $0 number"
echo " I will find sum of all digit for given number"
echo " For eg. $0 123, I will print 6 as sum of all digit (1+2+3)"
exit 1
fi
n=$1
sum=0
sd=0
while [ $n -gt 0 ]
do
sd=`expr $n % 10`
sum=`expr $sum + $sd`
n=`expr $n / 10`
done
echo "Sum of digit for numner is $sum"
Archived Comments
1. Thanks :)
View Tutorial By: Anuj Bhatnagar at 2015-05-06 14:02:19
2. Thanks Friend it was very helpfull.
View Tutorial By: UMAR FAROOQ at 2015-03-01 07:46:43
3. Thanx..very useful in this pgm..
View Tutorial By: priya at 2013-02-06 10:54:44
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