====== Permission ======

===== Tricks =====
  * recursive chmod
    * see [[http://superuser.com/questions/91935/how-to-chmod-all-directories-except-files-recursively/91966]]
    * ''find /path/to/base/dir -type d -print0 | xargs -0 chmod 755''
    * ''find /path/to/base/dir -type f -print0 | xargs -0 chmod 644''