title: Aptitude: Show What Repo a Package is From, Listing Contents of a Repo
body: <p>I am trying to prepare an AWS instance by installing some software, one of which is Fabric for Python, a SSH connection library.</p>
  
  <p>By default, AWS's yum doesn't have access to a Fabric distribution to install, so I was attempting to figure out where Aptitude would get Fabric from.</p>
  
  <p>I can't figure out a way to get what repo Fabric is in using Aptitude, or Yum for that matter.</p>
  
  <p>Also, on a similar note, if I do have the url of a specific repo, how would I go about listing all of the packages it has available?</p>