5SYSTEM ADMINISTRATION: MANAGING USERS
No sophisticated operating system, whether it’s Windows, OS X, or Unix, can run indefinitely without human intervention. If you’re on a multiuser Linux system, someone is already performing the necessary system administration tasks. You might be able to ignore the proverbial “man behind the curtain” who is managing and maintaining everything, or you might well be the Great and Powerful Oz yourself, the person who pulls the levers and pushes the buttons to keep the system running. If you have a single-user system, there are system administration tasks that you should be performing on a regular basis.
Fortunately, ...
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