title: AWS EC2 Ubuntu 12.04.1 LTS: deb command-not-found
body: <p>When I tried to install mongoDb in my AWS EC2 Linux instance:Ubuntu 12.04.1 LTS,</p>
  <pre><code>deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen
  </code></pre>
  <p>I get this following error, meaning deb command is not found.</p>
  <pre><code>$ deb Sorry, command-not-found has crashed! Please file a bug report
  at: https://bugs.launchpad.net/command-not-found/+filebug Please
  include the following information with the report:
   
  command-not-found version: 0.2.44
  </code></pre>
  <p>Can someone please help me find out how to install deb in my AWS instance?</p>