title: name is not in the sudoers file:  fedora for virtualbox guest addition on max OSX
body: <p>i'm trying to run the following program using on my VM using VirtualBox (i'm on a mac running OS X and the VM is running fedora):</p>
  
  <pre><code>VBoxLinuxAddiitons.run
  </code></pre>
  
  <p>I keep getting an error message saying user is "not in the sudoers file."</p>
  
  <p>This whole thing is an effort to change the screen resolution on my VM.</p>
  
  <p>Do I need to change my password, or add a new one?  Not really sure what to do here.</p>