Written by the author of GNU awk (gawk), this book introduces the awk programming language, going into depth to explain the... More > many features of the language and its syntax, and detailing the various GNU extensions. < Less

Manual for GNU sed, the free version of the Unix sed scripting language. A must for any Unix power user.

This is the complete source code to the game Doom by Id Software, released under the GNU GPL.

Manual to the GNU debugger, v6.5.50

The GNU Autotools suite (autoconf and automake) provide the standard cross-platform configuration and build system for open... More > source Unix packages. This book documents both autoconf and automake in the detail you need to set up your code with autotools. < Less

Subversion has rapidly become the most popular version control system for open source development. Become an expert in... More > Subversion with "Version Control with Subversion", the book written by the authors themselves. < Less

GNU Make is an open source version of the Unix "make" build tool.

Manual for the ubiquitous "bash" shell that is common on many modern Unix systems. A must for any Unix power user.

The GNU compiler collection is the standard C/C++ compiler for many different operating systems, including embedded systems.... More > This manual should be essential for any C programmer making use of GCC's extensive feature set on a regular basis. < Less

Written by the author of GNU awk (gawk), this book introduces the awk programming language, going into depth to explain the... More > many features of the language and its syntax, and detailing the various GNU extensions. < Less