title: Copy a section into a new file
body: <p>I have a text file,<br><br></p>
  
  <pre><code>!--- Marker one --!
  aaaa
  bbbb
  cccc
  dddd
  !--- Marker two --!
  eeee
  ffff
  !--- Marker three --!
  gggg
  hhhh
  iiii
  </code></pre>
  
  <p><br>
  And I need to copy from Marker two (till the end of Marker two) into a new file, using Bash. </p>
  
  <pre><code>!--- Marker two --!
  eeee
  ffff
  </code></pre>
  
  <p>Becomes a separate file. </p>