Linux definition by American Heritage Dictionary
linux - Computer Definition
A UNIX-like computer operating system (OS) developed by Linus Torvalds, and numerous collaborators worldwide, that was designed to run on PCs powered by Intel processors. Linux is free, open source software that anyone can modify, although at one's own risk. Many companies package the Linux kernel with a number of utilities and other programs into commercial versions that include documentation and support. See also kernel, open source, OS, program, UNIX, and utility.
An operating system widely used on Internet servers and embraced by large corporations as an alternative to the Microsoft operating system software. Linux was named after a Finnish man, Linus Torvalds, who started the community development process of this UNIX-compatible operating system. Linux is also viewed as an alternative to commercial flavors of UNIX.
A very popular open source operating system that runs on all major hardware platforms including x86, Itanium, PowerPC, ARM and IBM mainframes. Based on the design principles in the Unix operating system, and often called a "Unix clone", Linux is widely deployed as a server OS and as an embedded OS. For example, Linux runs in most of the servers on the Internet and in countless appliances and consumer electronics (see embedded Linux). In the desktop world, Linux has a small market share; however, Google's Chrome OS may change that status in the future (see Chromebook). Linux is a multitasking, multiuser operating system that is known for its stability. Although modified by numerous people, its robustness stems from its Unix-like architecture that keeps applications isolated from the core operating system. Licensed under the GNU General Public License (GPL), Linux is "the" flagship product of the open source community. Numerous groups work on their own flavor of Linux, modifying it for various purposes, and commercial organizations, such as Red Hat and Suse, "distribute" Linux for a fee (see Linux distribution). Linux is also compliant with POSIX, the IEEE compatibility standard (see POSIX). See open source and GNU General Public License. Not Just One User Interface Linux employs the X Window rendering system to create the basic window, but it relies on third-party user interfaces to display the borders, buttons, menus, icons and desktop that users manipulate. KDE and GNOME are two of the most popular user interfaces, and both may be included in a Linux distribution. See X Window, KDE and GNOME. From Unix to Minix to Linux In 1990, Finnish computer science student Linus Torvalds created the Linux kernel (the heart of the OS). He was inspired by Minix, a classroom teaching tool similar to Unix. Although Torvalds created the kernel, many of the supporting libraries, utilities and applications have come from the GNU Project, which is why Linux is often designated as GNU/Linux. Over the years, a huge number of programmers have contributed. Torvalds maintains the official Linux kernel, and Linux is his registered trademark. Linux Is Really "Lee-Nooks" In Finland, they say "lee-nooks" because Linus is pronounced "lee-noose." Since the English pronounce Linus as "line-iss," some call it "line-icks." More common is "lynn-icks." See embedded Linux, Minix, Ubuntu, SuSE Linux, UnitedLinux, GNU, open source, Linux Foundation, Trinux, SCO and Red Hat.