You can use OptionParser for most basic CLI apps. http://ruby-doc.org/stdlib-2.4.0/libdoc/optparse/rdoc/OptionParser.html http://ruby-doc.org/stdlib-2.4.0/libdo

You can use OptionParser for most basic CLI apps. http://ruby-doc.org/stdlib-2.4.0/libdoc/optparse/rdoc/OptionParser.html http://ruby-doc.org/stdlib-2.4.0/libdoc/optparse/rdoc/Option... There are lots more options here: http://www.awesomecommandlineapps.com/gems.html http://www.awesomecommandlineapps.com/gems.html