require "zip/zip" class Joe < Thor desc "download", "download the Selenium jar file from Google Code repository" def download url = "http://selenium.googlecode.com/files/selenium-server-standalone-2.0b1.jar" file = File.join("tmp", File.basename(url)) FileUtils.mkdir_p("tmp") system "wget #{url} -O #{file}" unless File.exist?(file) FileUtils.mv("#{file}", "vendor/selenium-server.jar") end end