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Make a statistic about the lines of code

Terminal - Make a statistic about the lines of code
find . -type f -name '*.c' -exec wc -l {} \; | awk '{sum+=$1} END {print sum}'
2009-09-04 15:51:30
User: arcege
Functions: awk find wc
Make a statistic about the lines of code

Have wc work on each file then add up the total with awk; get a 43% speed increase on RHEL over using "-exec cat|wc -l" and a 67% increase on my Ubuntu laptop (this is with 10MB of data in 767 files).


There are 7 alternatives - vote for the best!

Terminal - Alternatives
find . -type f -name "*.c" -exec cat {} \; | wc -l
2009-07-30 10:06:51
User: foremire
Functions: cat find wc

use find to grep all .c files from the target directory, cat them into one stream, then piped to wc to count the lines

find . -name \*.c | xargs wc -l | tail -1 | awk '{print $1}'
2009-09-08 08:25:45
User: karpoke
Functions: awk find tail wc xargs
Tags: awk find wc

This is really fast :)

time find . -name \*.c | xargs wc -l | tail -1 | awk '{print $1}'


real 0m0.191s

user 0m0.068s

sys 0m0.116s

Know a better way?

If you can do better, submit your command here.

What others think

wc can take multiple files as arguments, so you REALLY want to replace \; with +, enabling the "xargs mode" of the -exec option:

find . -type f -name "*.c" -exec wc -l {} + | awk '{t+=$1} END {print t}'
Comment by bwoodacre 450 weeks and 5 days ago

The "+" option is not a standard feature of find. Not all versions of Linux will support it, let alone the different flavors of UNIX out there.

Comment by arcege 450 weeks and 5 days ago

That's too bad since I find + so useful and have recommended it to so many on commandlinefu! Although for really kinky things you want xargs which more systems have, so I can see why "feature duplication" is avoided by some.

I tested it on Redhat, Ubuntu, and Debian and it works there. What non-dead UNIXes do not support the feature? I haven't been very successful at googling.

Comment by bwoodacre 450 weeks and 1 day ago

Your point of view

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