A Quick Introduction to Unix
by Jim Tyson, et al.
Publisher: Wikibooks 2011
Unix is an operating system designed for use on any kind of computer or computing device. It is a multi-tasking, multi-user system. Unix is also part of the underlying technology of the Internet. Many of the web servers that serve up the WWW for example run a program called Apache under Unix.
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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.
by Mendel Cooper - Lulu.com
This text progresses rapidly toward an advanced level of instruction, it is a textbook, self-study manual, reference and source of knowledge on UNIX shell scripting. The exercises and examples invite reader participation. Suitable for classroom use.
by David A. Wheeler
The book provides a set of design and implementation guidelines for writing secure programs for Linux and Unix systems. This document includes specific guidance for a number of languages, including C, C++, Java, Perl, Python, and Ada95.
by Steve Ambler, et al. - Wikibooks
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 Unix or Unix-like systems, including *BSD and GNU/Linux; it provides access to screen, keyboard, and mouse.