RAA - commandline

CommandLine is a library that greatly simplifies the repetitive process of building a command line user interface for your applications. It's 'ruby-like' usage style streamlines application development so that even applications with numerous configuration options can be quickly put together. CommandLine automatically builds friendly usage and help screens that are nicely formatted for the user.
CommandLine smartly handles the arguments passed on the commandline with OptionParser. OptionParser is designed to be a flexible command line parser with a Ruby look and feel to it. OptionParser supports the standard command line styles of Unix, Gnu and X Toolkit, but also lets you break those rules.