title: Find files whose path doesn't contain a word
body: <p>I am trying to list all the <code>.hpp</code> files but those whose path contain a word, 
  for example : </p>
  
  <p><code>find -name '*.hpp'</code> would give</p>
  
  <pre><code>folder1/folder2/something.hpp
  folder1/folder3/something.hpp
  folder1/folder4/something.hpp
  </code></pre>
  
  <p>I'd like to exclude the files in the folder2 in order to have only these : </p>
  
  <pre><code>folder1/folder3/something.hpp
  folder1/folder4/something.hpp
  </code></pre>