title: Configuring Subversion to use system users/passwords
body: <p>I'm using <a href="http://svnbook.red-bean.com/nightly/en/svn.serverconfig.httpd.html#svn.serverconfig.httpd.basic" rel="nofollow noreferrer">Subversion 1.6.1 with Apache</a>, on a Linux machine. The server is running over http, not https.</p>
  
  <p>I want to allow people to authenticate using the same login/password that they use to log into the machine via SSH. The SVN manual only explains how to use HTTP Basic Auth and Digest authentication. But with these approaches, I need to maintain a separate list of users, and they can't change their own passwords. I'd prefer to just use the system's users.</p>
  
  <ol>
  <li>How do I do this?</li>
  <li>Is this wise?</li>
  </ol>