summation script
 

Hello,

I have a very long list of Numbers like

116159
64625
55525
52981
40661
39653
39550
32807
32483
29250
28808
.
.
.
5
3
I wanna have the total sum , in fact I tried this code
#!/bin/sh


a=0
while read line

do
a=`expr $a + $line`;
done < list.txt
echo "Final Sum is: $a";

it gives me error like
expr:Syntax error
but it results the sum out , how come ? could someone help because I don't know if the result is correct or not ....

There must be a blank line at the end of the file. The last expr fails - try using "sh -x your_script" for debugging and a smaller input file - e.g.
Apart from that, looks fine.

Yes exactly
but I tried to delete the blank line but it does nothing !

let's have some awk then :)