title: Extracting all lines from multiples files
body: <p>I have 3 files:</p>
  
  <ul>
  <li>the first file is a list of IDs</li>
  <li>the second file is the source strings</li>
  <li>the third file is composed by target strings.</li>
  </ul>
  
  <p>Eg</p>
  
  <pre><code>File 1
  3952276-0-1
  3952276-0-2
  3952276-0-3
  3952276-0-4
  3952276-0-5
  3952276-0-6
  3952276-0-7
  3952276-0-8
  3952276-0-9
  3952276-0-10
  
  File 2
  source-string1
  source-string2
  source-string3
  source-string4
  source-string5
  source-string6
  source-string7
  source-string8
  source-string9
  source-string10
  
  File 3
  target-string1
  target-string2
  target-string3
  target-string4
  target-string5
  target-string6
  target-string7
  target-string8
  target-string9
  target-string10
  </code></pre>
  
  <p>I want a result file in csv like <strong>with the exception if the the target-string is the same of source string, <em>DO NOT COPY</em></strong> in ""... leave the "" of target-string empty if it's the same of source</p>
  
  <pre><code>"3952276-0-1","source-string1","target-string1"
  "3952276-0-2","source-string2","target-string2"
  "3952276-0-3","source-string3","target-string3"
  </code></pre>
  
  <p>How do i that? Thx in advance</p>