Based on the Perl tool 'ack' by Andy Lester. Examples with similar grep: $ rak pattern $ grep pattern $(find . | grep -v .svn) $ rak --ruby pattern $ grep pattern $(find . -name '*.rb' | grep -v .svn) == FEATURES/PROBLEMS: * Ruby regular expression syntax (uses oniguruma gem if installed). * Highlighted output. * Automatically recurses down the current directory or any given directories. * Skips version control directories, backups like '~' and '#' and your * ruby project's pkg directory. * Allows inclusion and exclusion of files based on types. * Many options similar to grep.