title: Remove blank line from text file
body: <p>I want to remove blank lines from text files. I'm simply trying to find a <code>findstr</code> command-line switch to find the solution but I can't get it to work. Here are my files:</p>
  
  <p><strong>test2.html:</strong></p>
  
  <pre><code>&lt;script src="common/latest_updates/angular-slider.js"&gt;&lt;/script&gt;
  &lt;script src="common/latest_updates//angular-list-group.js"&gt;&lt;/script&gt;
  blank space
  &lt;script src="common/latest_updates/jstree/jstree.js"&gt;&lt;/script&gt;
  &lt;script src="common/latest_updates/jstree/ngJsTree.js"&gt;&lt;/script&gt;
  blank space
  &lt;script src="common/d3/ngFunnel.js"&gt;&lt;/script&gt;
  </code></pre>
  
  <p><strong>Script:</strong></p>
  
  <pre><code>findstr /r /v "^$" test2.html &gt;&gt; test3.html
  </code></pre>