title: How to find files older than N days from a given timestamp
body: <p>I want to find files older than N days from a given timestamp in format YYYYMMDDHH</p>
  
  <p>I can find file older than 2 days with the below command, but this finds files with present time:</p>
  
  <pre><code>find /path/to/dir -mtime -2 -type f -ls
  </code></pre>
  
  <p>Lets say I give the input <code>timestamp=2011093009</code> I want to find files older than 2 days from 2011093009.</p>
  
  <p>Been doing my research, but can't seem to figure it out.</p>