Built-in Groups
There are three built-in groups that are created by the system and cannot be deleted:
• admin (composite)—This group has administrative privileges. The admin user is a system-provided member of this group. Other users can be added to or removed from this group by anyone with administrative privileges.
• all (composite)—This group contains all users except for the following: anonymous, nobody, system, and users of the dynamic domain. User membership is automatically maintained by the system.
• all (dynamic)—This group contains all users in the dynamic domain.