Essential System Administration, 3rd Edition

Preface

This book is an agglomeration of lean-tos and annexes and there is no knowing how big the next addition will be, or where it will be put. At any point, I can call the book finished or unfinished.

—Alexander Solzhenitsyn

A poem is never finished, only abandoned.

—Paul Valery

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 ...