title: Set Node.js to $PATH
body: <p>I am studying RoR and I am setting this virtual machine to "deploy" RoR and I got stuck in the Node.js installation.</p>
  
  <p>I am using Ubuntu 12.04 and I followed this step of this guide:</p>
  
  <p><a href="http://railsapps.github.com/installing-rails.html">http://railsapps.github.com/installing-rails.html</a></p>
  
  <blockquote>
    <p>Since Rails 3.1, a JavaScript runtime has been needed for development on Ubuntu Linux (it is not needed for Mac OS X or Windows). For
    development on Linux Ubuntu, it is best to install the Node.js
    server-side JavaScript environment:</p>
    
    <p><code>$ sudo apt-get install nodejs</code></p>
    
    <p>and set it in your $PATH.</p>
  </blockquote>
  
  <p>What does it mean, "set to my $PATH"?</p>
  
  <p>I've been searching for it on google in the last couple of hours and all solutions are different, for different problems and I get no simple answer for that. Can you give a little light here?</p>
  
  <p>Thanks!</p>