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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
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I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Commands tagged summation from sorted by
Terminal - Commands tagged summation - 3 results
perl -ne '@a=split(/,/); $b=0; foreach $r (1..$#a){ $b+=$a[$r] } print "$a[0],$b\n"' -f file.csv
2015-09-04 21:05:56
User: miniker84
Functions: perl

For all lines, sum the columns following the first one, and then print the first column plus the sum of all the other columns.

example input:






egrep '.*(("STATUS)|("HEAD)).*' http_access.2012.07.18.log | awk '{sum+=$11; ++n} END {print "Tot="sum"("n")";print "Avg="sum/n}'
2012-07-27 12:18:29
User: fanchok
Functions: awk egrep

Depending on your Apache access log configuration you may have to change the sum+=$11 to previous or next awk token.

Beware, usually in access log last token is time of response in microseconds, penultimate token is size of response in bytes. You may use this command line to calculate sum and average of responses sizes.

You can also refine the egrep regexp to match specific HTTP requests.

perl -ne '$sum += $_ for grep { /\d+/ } split /[^\d\-\.]+/; print "$sum\n"'
2009-06-16 06:39:08
User: obscurite
Functions: grep perl split

Good for summing the numbers embedded in text - a food journal entry for example with calories listed per food where you want the total calories. Use this to monitor and keep a total on anything that ouputs numbers.