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Re:Make grep 50x faster by pmelendez on Sunday December 15, 2013 @12:11PM (#6910007)
I believe that's what ack-grep[1] and the silver searcher(AKA ag)[2] do underneath.

Actually I would recommend people to give it a try to those alternatives, I haven't had to look back to grep again since I am using ack-grep (and now ag)

[1] http://beyondgrep.com/

[2] http://geoff.greer.fm/2011/12/27/the-silver-searcher-better-...

Re:Make grep 50x faster by cs02rm0 on Sunday December 15, 2013 @12:37PM (#6910086)
Maybe, the silver searcher still seems a _lot_ faster than grep with this trick though. (About 0.5s vs 32s on an arbitrary test).