title: rsync -option explaination?
body: <p>I've seen the switches below on an rsync script and I just wondered if someone could break them down for me...</p>
  
  <pre><code>rsync --chmod=ugo=rwX
  </code></pre>
  
  <p>ugo?
  rwX (read-write-Execute - why the capitalisation on Execute?)</p>
  
  <pre><code>--chmod=CHMOD           affect file and/or directory permissions
  </code></pre>
  
  <p>Also what is "don't cross filesystem boundaries" for the -x option?</p>
  
  <pre><code>-x, --one-file-system   don't cross filesystem boundaries
  </code></pre>
  
  <p>Many Thanks</p>