title: find all subversion working copies on machine
body: <p>How could I use <code>find</code> unix utility to find all working copies on the machine? For example, I can use <code>find / -name .svn -type d</code> command, but it outputs all redundant results (a lot of subfolders), while I need only parent directory of working copy to be shown. </p>
  
  <p>There is related question, but it does not really help in my case: <a href="https://stackoverflow.com/questions/1242364/">How can I find the root folder of a given subversion working copy</a></p>