Guide to X11
by Steve Ambler, et al.
Publisher: Wikibooks 2010
This book is about the X Window System. Some users describe it as the Unix and Linux graphics drivers. X11 is the graphical environment for most Unix or Unix-like systems, including *BSD and GNU/Linux; it provides access to screen, keyboard, and mouse.
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by Aurelio A. Heckert - Wikibooks
Awk has two faces: it is a utility for performing simple text-processing tasks, and it is a programming language for performing complex text-processing tasks. Awk is useful for simple, quick-and-dirty computational programming.
by Frank G. Fiamingo - The Ohio State University
Systems administration is the installation and maintenance of the UNIX computer system. The system administrator will need to maintain the software and hardware for the system. This includes hardware configuration, software installation, etc.
by Eric S. Raymond - Addison-Wesley Professional
The first part of the book is philosophy and history of UNIX, the second part unfolds the Unix principles into more specific advice about design, the third part focuses on tools for solving problems, and the fourth part is about community.
vi is a powerful editor that is ubiquitous amongst Unix and Unix-like operating systems, but is available on many other operating systems. Even if you use another editor you must have a passing knowledge of vi as an administrator.