title: Heroku Gem doesn't work after installing it
body: <p>I am trying to get heroku running on Ubuntu 9.10</p>
  
  <p>I typed </p>
  
  <pre><code>sudo gem install heroku
  </code></pre>
  
  <p>and everything works fine but then when I go to run:</p>
  
  <pre><code>heroku list
  </code></pre>
  
  <p>I get </p>
  
  <blockquote>
    <p>heroku: command not found</p>
  </blockquote>