ECS 153 Fall 1998, Puzzle for November 13, 1998
The UNIX operating system (and most computer systems) have an
all-powerful user (root or operator or wheel).
- Why does such a user exist?
- Dennis Ritchie called the existance of this user "both a
theoretical and practical flaw." Why?
- If you were designing an operating system with security being a key
goal, could you avoid creating such a user? If so how? If not, how
would you implement the functionality of the root user?
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