title: find . -type f -exec chmod 644 {} ;
body: <p>why doesn't this work I am trying to change all files to 644 abd all -d to 755:</p>
  
  <pre><code>find . -type f -exec chmod 644 {} ;
  </code></pre>
  
  <p><strong>i get: find: missing argument to `-exec'</strong>
   thanks</p>