title: What version of MongoDB is installed on Ubuntu
body: <p>Hi I'm a bit of a shell n00b.</p>
  
  <p>Can anyone tell me how I would check the version of MongoDB that is installed on my Linux Ubuntu machine?</p>
  
  <p>I see that my MongoDB shell version: 1.2.2 so Im pretty sure that MongoDB itself is out dated too. And does anyone know of any 'How to update MongoDB' docs? I find mongodb.org to be a bit confusing.</p>
  
  <p>Please and thank you.</p>
  
  <hr>
  
  <p>Ok if I use db.version() inside of mongo shell it says 1.2.2</p>
  
  <p>If I $ mongod --version I get this:</p>
  
  <pre><code>db version v1.2.2, pdfile version 4.5
  Wed Oct 16 10:28:22 git version: nogitversion
  </code></pre>
  
  <p>I ran </p>
  
  <pre><code>sudo apt-get update
  sudo apt-get install mongodb
  </code></pre>
  
  <p>and get </p>
  
  <pre><code>sudo apt-get install mongodb
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  mongodb is already the newest version.
  0 upgraded, 0 newly installed, 0 to remove and 179 not upgraded.
  
  mongod --version
  db version v1.2.2, pdfile version 4.5
  Wed Oct 16 10:31:07 git version: nogitversion
  </code></pre>
  
  <p>So why isn't it updating? Is apt-get pointing at the wrong repo / source? </p>