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 Chet Ramey, Brian Fox - gnu.org
A description of the features that are present in the Bash shell. GNU Bash is an implementation of the POSIX.2 specification, with additional features from the C-shell and Korn shell. Most Bourne shell scripts can be run by Bash without modification.
by Simson Garfinkel, Daniel Weise, Steven Strassmann - John Wiley & Sons Inc
Self-help guide for people affected by the world's most esoteric operating system. Turn here for answers to all-important questions, such as... Why does the online documentation lie to us? Why does the user's guide bear no relationship to reality?
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 Peter H. Salus - Reed Media Services
In addition to covering a history of free and open source, The Daemon, the Gnu, and the Penguin explores how free and open software is changing the world. It is authored by Peter Salus, a noted UNIX, open source, and Internet historian and author.