title: Ruby require error
body: <p>I'm trying to call the file from the file <code>cpu.rb</code> from <code>main.rb</code>:</p>
  
  <pre><code>require 'rubygems'
  require 'cpu.rb'
  </code></pre>
  
  <p>But it does not work. I use Netbeans and Ruby 1.9.2. What's the problem?</p>