Consider a file MyNotes.txt on a Unix system that user Alice created and that she currently owns. The file is a file of text notes taken during an interview. User Bob should own the file from now on and have full access to it as appropriate. User Charlie should only have read access. Users Donna and Eve should not be able to access the file for reading and writing at all. Specify: 

1. Which groups would you need create to implement this access scheme?
2. Who would be a member of which group?
3. Which commands would you use to ensure correct ownership and group settings for the file? Do not use any octal notation here yet.
4. Which user(s) could execute these commands?
5. What would be the "rwx" permissions for the file be?
6. Which octal code would you use to set them?