title: Merging text files in .bat with line break between files
body: <p>I'm trying to create a .bat file to run on Windows 10.
  Basically I have multiple .csv files in a folder.</p>
  
  <p>FileA.csv</p>
  
  <pre><code>abc,abc
  def,def
  </code></pre>
  
  <p>FileB.csv</p>
  
  <pre><code>ghi,ghi
  jkl,jkl
  </code></pre>
  
  <p>I want the files to be merged to FileC.csv formatted like this.</p>
  
  <pre><code>abc,abc
  def,def
  ghi,ghi
  jkl,jkl
  </code></pre>
  
  <p>If I use:</p>
  
  <pre><code>copy /b *.csv FileC.csv
  </code></pre>
  
  <p>I get this output in FileC.csv:</p>
  
  <pre><code>abc,abc
  def,defghi,ghi
  jkl,jkl
  </code></pre>
  
  <p>I need to add a line break between merged files but can't figure out how.  Any help would be appreciated.</p>