title: Recursively adding files to a Subversion repository
body: <p>Is there a way to recursively add all "non added" files to SVN?</p>
  
  <p>I want to do something like</p>
  
  <pre><code>svn add trunk/
  </code></pre>
  
  <p>to add all new files, without getting:</p>
  
  <pre><code>svn: warning: 'trunk' is already under version control
  </code></pre>
  
  <p>If this is not possible, is there a way to get a list of all files that are not under version control in the directory?</p>
  
  <p>Note that I am only interested in using the command line. </p>