title: How do I recursively grep files in multiple folders? I'm unable to pipe the recursive cat output
body: <p>I have 4 folders, <code>set1, set2, set3, set4</code>).
  <br>Each folder has 1 file called <code>result.txt</code>.
  <br>Contents of each of the result files look like this:</p>
  <pre><code>result is:
  score=19
  </code></pre>
  <p>i'm able to recursively cat the file contents with this 1 liner.</p>
  <pre><code>find . -iname &quot;result.txt&quot; -exec cat {} \;
  </code></pre>
  <p><strong>Question is:</strong></p>
  <blockquote>
  <p>How do I recursively pipe the <code>cat</code> output into <code>grep</code> and <em>add those
  scores</em>?</p>
  </blockquote>
  <p><strong>Expected Output:</strong></p>
  <blockquote>
  <p>Combined Score = 251</p>
  </blockquote>
  <p><em>(Add all scores in each of the result.txt files
  45+100+87+19)</em></p>
  <p>playground link: <a href="https://repl.it/repls/SatisfiedBeigeListener" rel="nofollow noreferrer">https://repl.it/repls/SatisfiedBeigeListener</a></p>
  <p><a href="https://i.stack.imgur.com/cOM0Zm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cOM0Zm.png" alt="enter image description here" /></a></p>