1. Create a file that has no rights at all. Try to remove it.
  1. Create a directory and in it create a file that has no rights.
  2. Remove the write rights from the directory.
  3. Try to remove the file.
  1. Create a directory and in it create a file.
  2. Remove the eXecutable bit from the directory.
  3. Try to list the content of the directory.