gemでsinatraとpassengerをインストール # gem install sinatra # gem install passengerapacheのモジュールをインストール # passenger-install-apache2-module途中でいくつか質問が出る This installer will guide you through the entire installation process. It shouldn't take more than 3 minutes in total. Here's what you can expect from the installation process: 1. The Apache 2 module will be installed for you. 2. You'll learn how to configure