New version of Rak
I released a new version of Rak today with some bug fixes and enhancements.
New features:
- Colouring works on Windows if win32console gem is installed, fails gracefully if not.
- Added .rake, .erb and .haml to Ruby filetypes.
- Added match only at end-of/start-of line options
Thanks to Edvard Majakari, Kevin Ballard, Esad Hajdarevic, Bela Babik, Genki Takiuchi and Rob Knight for suggestions and fixes.

Rak, a grep replacement in pure-Ruby
Rak is a tool for searching directories for files matching a regexp, like a more convenient grep. It gives you pretty highlighted output, and uses the Ruby regexp syntax. To install type gem install rak.
Rak is implemented in pure Ruby, so it should work on all platforms. Windows folk will probably find they need to use the –nocolour option (I will fix this next time I boot into Windows for any reason).
NB. Rak is an almost perfect clone of the Perl tool Ack by Andy Lester. He should get all the credit for the idea.