find: Fixing Permissions

 
 9.5 Fixing Permissions
 ======================
 
 Suppose you want to make sure that everyone can write to the directories
 in a certain directory tree.  Here is a way to find directories lacking
 either user or group write permission (or both), and fix their
 permissions:
 
      find . -type d -not -perm -ug=w | xargs chmod ug+w
 
 You could also reverse the operations, if you want to make sure that
 directories do _not_ have world write permission.