title: Unix directory permissions for write
body: <p>Say I have a folder "root". I own this folder, and I make it such that for others (which includes the user "user2", the permissions are r-x)</p>
  
  <p>Within root I have another folder "bin". I change the owner of "bin" to the user "user2", and give him rwx permissions. </p>
  
  <ol>
  <li>Will user2 be able to create new files in the folder "bin"? Does not having write for "root" affect his ability to do so?</li>
  <li>Also, can user2 delete the entire folder "bin" from "root"? (I don't want him to be able to do so - he just needs to create/delete files within the folder bin!)</li>
  </ol>