Sample script for CGI/ERB and Ruby/Locale. Run the http server. $ ruby http.rb Access the http server from WWW browser: http://localhost:10080/ or If you want to set locale(lang) forcely, then: http://localhost:10080/?lang=ja #ja is a target locale in this sample. http.rb - an http server for samples using WEBrick index.cgi - a sample menu (CGI sample) cookie.cgi - Set lang to cookie value. locale.css - CSS file.