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how do you get input of a file to calculations

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# 1  
Old 04-10-2008
how do you get input of a file to calculations
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?
# 2  
Old 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.
Last edited by vino; 04-10-2008 at 02:32 AM..
# 3  
Old 04-10-2008
Code:
awk '{
 a=a+$0
 }
 END{
print a
}' filename

# 4  
Old 04-10-2008
you can also create a shell script for this, using for.. this is the lenghty way Smilie
x=0
for i in `cat numbers.txt`
do
x=`expr $x + $i`
done
echo $x
# 5  
Old 04-10-2008
Bug
thanks guys you guys are awsome
# 6  
Old 04-11-2008
Code:
$ cat filename | xargs -n5 | tr ' ' '+' | bc
268

# 7  
Old 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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