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Having used ack for some time now, I find it much better for my development purposes than grep. But then I've heard about rak and grin. Has anyone used all three of them and can provide a comparison?

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related question (contains links to similar posts on SO): – quack quixote Feb 4 '10 at 15:29
that's the place where I've learned about grin and rake. Still it doesn't compare these tools. I want to know whether it's worth to make an effort and try out grin and rak. – sumek Feb 5 '10 at 20:24
I guess the answer is settled for now. Use the silver searcher aka ag. It's fast! and has sane defaults. – sumek Sep 2 '14 at 9:38

As the rak website says, rak is a Ruby grep-like tool based on ack. grin is a Python grep-like tool also based on ack.

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You can use The Silver Searcher. Here is project page. It is really fast.

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