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Can bash add numbers within a file if the file is simple?
Eg. I have a file with numbers. They're separated by new lines. That's all there is in it.
Can it add them up or perform some maths processing on them?
I was reading up about "bc" and tried various ways to use it using xargs to pass arguments to it, but it wouldn't give. Needs more research. I guess.
I suppose I want to do this in bash because it's (or its brother and sister shells) available on old and minimal distros. Besides I wouldn't like to assume perl everywhere I go
Actually I am a perl fan, and any chance to brush up is welcome, so thanks for script Matt. Though: isn't "use warnings;" redundant after the -w shebang line?
Naturally I could also load the file into gnumeric and sum off from there but the fun is not only doing it, but finding the most efficent ways of doing it.
BTW all this come from grep -ch *, which counts the occurences of a word in all the files of a directory. I'm going to try out wapcaplet's sugg later on and check out bc a bit more, as it does handle floating point, and looks to be fairly powerful.