ANSI C for Programmers on UNIX Systems
by Tim Love
This document aims to introduce C by providing and explaining examples of common programming tasks, and to enable the reader to learn from available source code by clarifying common causes of incomprehension. The first part of the document is an informal introduction to C.
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by Brian "Beej Jorgensen" Hall
This document discusses several methods of Interprocess Communication, some of which are better suited to certain tasks than others. If you know C or C++ and are pretty good using a Unix environment, these documents are for you.
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.
by Chet Ramey, Brian Fox - Network Theory Ltd.
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 Jim Tyson, et al. - Wikibooks
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 run Apache under Unix.