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Essential System Administration, Third Edition

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Whether you use a standalone Unix system, routinely provide administrative support for a larger shared system, or just want an understanding of basic administrative functions, Essential System Administration is for you. This comprehensive and invaluable book combines the author's years of practical experience with technical expertise to help you manage Unix systems as productively and painlessly as possible.

This book covers the fundamental and essential tasks of Unix system administration. Although it includes information designed for people new to system administration, its contents extend well beyond the basics. The primary goal of this book is to make system administration on Unix systems straightforward; it does so by providing you with exactly the information you need. As I see it, this means finding a middle ground between a general overview that is too simple to be of much use to anyone but a complete novice, and a slog through all the obscurities and eccentricities that only a fanatic could love (some books actually suffer from both these conditions at the same time). In other words, I won't leave you hanging when the first complication arrives, and I also won't make you wade through a lot of extraneous information to find what actually matters.

This book approaches system administration from a task-oriented perspective, so it is organized around various facets of the system administrator's job, rather than around the features of the Unix operating system, or the workings of the hardware subsystems in a typical system, or some designated group of administrative commands. These are the raw materials and tools of system administration, but an effective administrator has to know when and how to apply and deploy them. You need to have the ability, for example, to move from a user's complaint ("This job only needs 10 minutes of CPU time, but it takes it three hours to get it!") through a diagnosis of the problem ("The system is thrashing because there isn't enough swap space"), to the particular command that will solve it (swap or swapon). Accordingly, this book covers all facets of Unix system administration: the general concepts, underlying structure, and guiding assumptions that define the Unix environment, as well as the commands, procedures, strategies, and policies essential to success as a system administrator. It will talk about all the usual administrative tools that Unix provides and also how to use them more smartly and efficiently.

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