title: obscure Unix find command syntax understanding
body: <p>Need help in understanding this complex Unix <strong>find</strong> command and its operation:</p>
  
  <pre><code>find . \( \! -user xx -exec chown -- xx '{}' + -false \) -o    \
  \( \! -group root -exec chgrp -- root '{}' + \) -o \
  \( ! -perm 700 -exec chmod -- 700 '{}' + -exec false \; \)
  </code></pre>
  
  <p>Also, I am looking out in particular the purpose of <strong>-false</strong> predicate. I guess I mixed both GNU and non-GNU <strong>find</strong> syntax</p>