title: How do I upgrade drush?
body: <p>I created a drupal site in AWS on a ubuntu machine.  I have used</p>
  
  <pre><code>sudo apt-get drush
  </code></pre>
  
  <p>to download the newest drush version, version 7.</p>
  
  <p>when I use </p>
  
  <pre><code>drush version
  </code></pre>
  
  <p>I still get version 5.10.0</p>
  
  <p>Now that i have that i am still using drush version 5.  how do I make it use drush version 7?</p>