how do you get input of a file to calculations

nadman123 · #1 (**permalink**) 04-10-2008

ex:-
say you have a file called numbers.txt . and in it you have the following numbers
12
75
74
24
83
how do you get the sum of all those numbers?

vino · #2 (**permalink**) 04-10-2008

Quote:

Originally Posted by nadman123

ex:-
say you have a file called numbers.txt . and in it you have the following numbers
12
75
74
24
83
how do you get the sum of all those numbers?

This looks more like homework. If it is not homework, search the forum.

summer_cherry · #3 (**permalink**) 04-10-2008

Code:

awk '{
 a=a+$0
 }
 END{
print a
}' filename

tonan · #4 (**permalink**) 04-10-2008

you can also create a shell script for this, using for.. this is the lenghty way

x=0
for i in `cat numbers.txt`
do
x=`expr $x + $i`
done
echo $x

nadman123 · #5 (**permalink**) 04-10-2008

thanks guys you guys are awsome

soemac · #6 (**permalink**) 04-11-2008

Code:

$ cat filename | xargs -n5 | tr ' ' '+' | bc
268

era · #7 (**permalink**) 04-11-2008

That's a Useless Use of Cat, and xargs already knows how many arguments there are.

Code:

xargs <filename | tr ' ' + | bc

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