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Book Overview & Buying
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Table Of Contents
Linux Essentials - Second Edition
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Linux is modeled after Unix, which was designed as a multiuser OS. In principle, you can have thousands of accounts on a single Unix (or Linux) computer. One user, though, needs extraordinary power in order to manage the features of the computer as a whole. This is the root user, also known as the super user, superuser, or the administrator. Knowing why root exists, how to do things as root, and how to use root privileges safely is important for managing a Linux system.

Most people use computers to do ordinary day-to-day computer tasks—browse the Web, write letters, manage a music collection, and so on. These activities are known collectively as user tasks, and they don’t require special privileges. As just noted, a Linux computer can have many user accounts, and the users can use the computer from these user accounts (also known as unprivileged accounts, unprivileged users, or standard users) to perform such user tasks.
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