title: append lines from files to another files
body: <p>I would like to append lines from file1 to file2 , the trick is each line from file1 when we append it to files2 it should goes to same line number</p>
  
  <p>exmaple file 1</p>
  
  <pre><code>/var/2019/7/10/1266941.mp3
   /var/2019/7/10/1266941.mp3
   /var/2019/7/10/1266941.mp3
  </code></pre>
  
  <p>exmaple file  2</p>
  
  <pre><code>1266941
  1266941
  1266941
  </code></pre>
  
  <p>New file lines should be </p>
  
  <pre><code>/var/2019/7/10/1266941.mp3  1266941
   /var/2019/7/10/1266941.mp3  1266941
   /var/2019/7/10/1266941.mp3 1266941
  </code></pre>
  
  <p>what is the best way to do it </p>