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# more add.sh
i=0
while read line
do
k=`expr $i + $line`
i=$k
done < num
echo "Final : ${i}"


# sh add.sh
Final : 0 -------------> Here is my...

Pradeep and Zedex

Can you tell me which OS and which shell you are using?

I tested in linux, my script works well.

but found that my script does not give expected output in Sun OS 9 and 10...

Yes, Its working on ksh. but not on sh. any idea why its not working in sh?

Thanks!

Pradeep, There is no blank line in "num" file.my question is that why am not getting total sum value outside the while loop.? is it due to scope of the variable? but am getting value of the variable...

Here is a file "num" and its content
# more num
1
2
3
6
5
3
# more add.sh
#!/bin/sh
#set -x
i=0
while read line
do i=`expr $i + $line`
done < num
echo "Final :$i"

# ./add.sh
Final...

Please explain briefly what you needed

Hi All,

I am new to unix shell scripting,
in the below script "num" is an input file which contains a series of numbers example :
2
3
5
8

I want to add the above all numbers and want...