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Asked: 2026-05-11T01:43:59+00:00

I am looking for a command that will accept (as input) multiple lines of

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I am looking for a command that will accept (as input) multiple lines of text, each line containing a single integer, and output the sum of these integers.

As a bit of background, I have a log file which includes timing measurements. Through grepping for the relevant lines and a bit of sed reformatting I can list all of the timings in that file. I would like to work out the total. I can pipe this intermediate output to any command in order to do the final sum. I have always used expr in the past, but unless it runs in RPN mode I do not think it is going to cope with this (and even then it would be tricky).

How can I get the summation of integers?

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  1. Bit of awk should do it? 

    awk '{s+=$1} END {print s}' mydatafile

    Note: some versions of awk have some odd behaviours if you are going to be adding anything exceeding 2^31 (2147483647). See comments for more background. One suggestion is to use printf rather than print:

    awk '{s+=$1} END {printf '%.0f', s}' mydatafile
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