title: Reverting single file in SVN to a particular revision
body: <p>I have a file as shown below in an SVN repo that I would like to revert to a previous version. What is the way to do this in SVN? I want only downgrade this particular file to an older version, not the whole repo.</p>
  
  <p>Thanks.</p>
  
  <pre><code>$ svn log myfile.py
  ----------------------
  r179 | xx | 2010-05-10
  
  Change 3
  ----------------------
  r175 | xx | 2010-05-08
  
  Change 2
  ----------------------
  r174 | xx | 2010-05-04
  
  Initial
  </code></pre>