mjhjmtu

I have the following file:

lab1:/etc/scripts# cat /tmp/tmp.PGikhA/audit.txt 
 344 server1 
 1 server2

I want to be able to add the numbers from each row together - so in this case, I want to add 344 + 1 and end up with 345.

So far, I have the following steps figured out:

lab-1:/etc/scripts# cat /tmp/tmp.PGikhA/audit.txt |awk 'print $1' 
344 
1 

But I don't know how to add them together. I know that I can just use $a + $b syntax, but how do I get the 344 and 1 into separate variables to do that?

Thanks.

EDIT 1

I'm getting two values returned instead of just the one total. Can't see what I'm doing wrong:

lab-1:/etc/scripts# cat /tmp/tmp.jcbiih/audit.txt | awk 'print $1' | awk ' sum+=$1 print 
sum' 
344 
345 
lab-1:/etc/scripts# cat /tmp/tmp.jcbiih/audit.txt | awk ' sum+=$1 print sum' 
344 
345 

You can do your math in awk easily. Here is an example:

awk ' total+=$1 END print total '

If you really wanted to use bash, you could use a simple loop to read one line at a time and add it up:

count=0 
while read -r number _; do # put the first column in "number" and discard the rest of the line
 count=$(( count + number )) 
done < /tmp/foo
echo $count