Shell script to read 5 digit number and calculate the sum of digit

#!/bin/bash
# Shell script to read 5 digit number and calculate the sum of digit
# -------------------------------------------------------------------------
# Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
 
echo -n "Enter numnber : "
read n
 
# find out length of string using wc -c command
len=$(echo $n | wc -c)
 
# remove \n i.e. new line character
len=$(( $len - 1 ))
 
# use loop to go throug all digit one by one and calculate sum of digit on fly
for (( i=1; i <= $len; i++ ))
do
   sum=$(( $sum + $(echo $n | cut -c $i) ))
done
echo "Sum of $n is $sum"
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1 comment… add one
  • Noof Jun 20, 2011 @ 8:07

    write a shell script to find the summation of the series 1+(2*2)+(3*3)+(4*4)+……+(n*n)

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