Unix
Download as DOCX, PDF1 like237 views
Unix-like refers to a diverse family of operating systems that are similar to the original Unix system. This includes major subcategories like System V, BSD, and Linux. Unix systems run on a variety of hardware and are commonly used as servers in business and for workstations in academic and engineering environments. Free and open source Unix variants like Linux and BSD are increasingly popular for both servers and desktops. Over time, free Unix systems have replaced many proprietary Unix systems for tasks like scientific modeling and computer animation.
Unix
- 1. Unix-like The Unix-like family is a diverse group of operating systems, with several major subcategories including System V, BSD, and Linux. The name "Unix" is a trademark of The Open Group which licenses it for use to any operating system that has been shown to conform to the definitions that they have cooperatively developed. The name is commonly used to refer to the large set of operating systems which resemble the original Unix. Unix systems run on a wide variety of machine architectures. They are used heavily as server systems in business, as well as workstations in academic and engineering environments. Free software Unix variants, such as Linux and BSD, are increasingly popular. They are used in the desktop market as well, for example Ubuntu, but mostly by hobbyists. Some Unix variants like HP's HP-UX and IBM's AIX are designed to run only on that vendor's proprietary hardware. Others, such as Solaris, can run on both proprietary hardware and on commodity x86 PCs. Apple's Mac OS X, a microkernel BSD variant derived from NeXTSTEP, Mach, and FreeBSD, has replaced Apple's earlier (non-Unix) Mac OS. Over the past several years, free Unix systems have supplanted proprietary ones in most instances. For instance, scientific modeling and computer animation were once the province of SGI's IRIX. Today, they are dominated by Linux-based or Plan 9 clusters. The team at Bell Labs who designed and developed Unix went on to develop Plan 9 and Inferno, which were designed for modern distributed environments. They had graphics built- in, unlike Unix counterparts that added it to the design later. Plan 9 did not become popular because, unlike many Unix distributions, it was not originally free. It has since been released under Free Software and Open Source Lucent Public License, and has an expanding community of developers. Inferno was sold to Vita Nuova and has been released under a GPL/MIT license.