I'd appreciate help with a couple questions regarding standard file permissions. Assume that I'm not using access control lists.
- If a file is associated with multiple groups, must all groups have the same permissions?
- If the group permission includes write access, can any member of any group the file is associated with change the file permissions? Can such a person change the file owner?
- Say now the file permission is rwxr----- (owner can do everything, but group members can only read). I am in the group associated with the file. I am also the file owner. Which permission am I granted? Read-only, or rwx?