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Linux Administration: A Beginner’s Guide (Sixth Edition) by Wale Soyinka

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CHAPTER 4
Managing Users and Groups
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Linux/UNIX was designed from the ground up to be a multiuser operating system. But a multiuser operating system would not be much good without users! And this brings us to the topic of managing users in Linux.
On computer systems, a system administrator sets up user accounts, which determine who has access to what. The ability of a person to access a system is determined by whether that user exists and has ...

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