title: How to get log4net to keep only the last X days of logs?
body: <p>I only want log4net to keep let's say 10 days-worth of log files as keeping them growing indefinitely will eventually eat up my disk space.  I had thought that I could do this by setting</p>
  
  <pre><code>&lt;maxSizeRollBackups value="10" /&gt;
  </code></pre>
  
  <p>on my RollingFileAppender but no dice.  How do I do this?</p>