require 'optparse' optparse = OptionParser.new do |opts| opts.banner = "Usage: spire create folder" opts.on('-h', '--help', 'Displays this usage screen') do puts optparse exit end options = {} opts.on('create', '-c', 'Creates a new app.') do |params| options[:create] = params end end begin optparse.parse! rescue OptionParser::InvalidOption puts optparse exit 1 end unless Dir.exists?(options[:create]) system("git clone git://github.com/snicol/spire-base-app.git ../#{options[:create]}") end