Publisher: Wikipedia 2014
Linux is a Unix-like and POSIX-compliant computer operating system assembled under the model of free and open source software development and distribution. The defining component of Linux is the Linux kernel, an operating system kernel first released on 5 October 1991 by Linus Torvalds.
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by Ramesh Natarajan - The Geek Stuff
There are total of 101 hacks in this book that will help you build a strong foundation in Linux. All the hacks are explained with appropriate Linux command examples that are easy to follow. The hacks are concise, well written and easy to read.
by Binh Nguyen
This document is designed to be a resource for those Linux users wishing to seek clarification on Linux/UNIX/POSIX related terms and jargon. At approximately 24000 definitions it is one of the largest Linux related dictionaries currently available.
by Andries Brouwer
This text covers the kernel source, user space and the libc interface, system calls, signals, file names and files, filesystems, Linux virtual file system, memory, processes, character devices, asynchronous events, sysfs and kobjects, security.
by Mark Allen - CTDP
Organized overview of Linux commands, file systems, system configuration, networking, managing users and processes, configuration of X, init process, liLO and the kernel, setting up system logging, user accounting, CRON, network, DNS, DHCP, etc.