title: dos2unix modifies binary files - why
body: <p>By default it is not supposed to affect binary files.</p>
  
  <p>I tested it in a folder with images and although most images were not affected, a few were. If <code>dos2unix</code> cannot tell a binary file from a text file, must I resort to specifically including and/or excluding certain file extensions for it to work properly?</p>
  
  <p>NOTE: when I run <code>file image.jpg</code> on any of the jpgs, whether it got modified or not, the result is:</p>
  
  <pre><code>JPEG image data, JFIF standard 1.01
  </code></pre>