title: Suppress dates in diff -urN
body: <p>I am using <code>diff -urN</code> to compare two directories and create a patch, something like:</p>
  
  <pre><code>diff -urN ../resources-original/ogc ogc &gt; ../../../src/main/patches/ogc.patch
  </code></pre>
  
  <p>The patch contains dates in <code>---</code> and <code>+++</code> lines:</p>
  
  <pre><code>--- ../resources-original/ogc/wms/1.3.0/capabilities_1_3_0.xsd  Sun Jul 22 03:59:38 2012
  +++ ogc/wms/1.3.0/capabilities_1_3_0.xsd    Sun Jun 12 19:59:29 2016
  </code></pre>
  
  <p>Is there a possibility to suppress these dates?</p>