title: find . -exec echo {} \; = missing argument to `-exec'
body: <p>Why doesn't this work? (echo is not the real command)</p>
  
  <pre><code>$ find . -type d -exec echo {} \;
  find: missing argument to `-exec'
  </code></pre>
  
  <p>I managed to do that anyway like this:</p>
  
  <pre><code>$ for f in `find . -type d`; do echo $f; done
  </code></pre>