title: Add files to folders
body: <p>I have fildes witht he names:</p>
  
  <p>fd3_xxx
  fd3_xx1
  fd3_xx2
  fd6_xxx
  fd6_xx1
  fd6_xx2</p>
  
  <p>How can I write a batch file that would put all the "fd3" files in a folder called "fd3", and all the "fd6" files into a folder called "fd6'.</p>