linuxnewbieguide.org
Chapter 1: What is Linux — The Ultimate Linux Newbie Guide
Topics covered in this chapter: 1.1 What’s An Operating system? 1.2 What is UNIX (and a little bit of history) 1.3 How does Linux differ from UNIX? Linux, By Definition: Linux is a Unix-like 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,[12] an operating system kernel first released on September …