title: Windows batch - concatenate multiple text files into one
body: <p>I need to create a script, which concatenates multiple text files into one.
  I know it's simple to use</p>
  <pre><code>type *.txt &gt; merged.txt
  </code></pre>
  <p>But the requirement is to &quot;concatenate files from same day into file day_YYYY-DD-MM.txt&quot; I am a Linux user and Windows batch is hell for me. It's Windows XP.</p>