tailieunhanh - UNIX UNLEASHED PHẦN 8

Khái niệm cơ bản cài đặt UNIX Bắt đầu và Tắt tập tin Quản trị hệ thống tài Quản trị mạng UNIX Kế toán hiệu suất hệ thống Thư Giám sát Quản lý thiết bị Cục Quản lý Tin tức UUCP Quản trị UNIX hệ thống an ninh | Part VIII UNIX Flavors and Graphical User Interfaces UNIX Flavors Graphical User Interfaces for End Users UNIX Graphical User Interfaces for Programmers o 45 UNIX Flavors By S. Lee Henry The Beginnings of UNIX From Lab to Mainstream Factors Leading to UNIX s Early Success The UNIX Model of Computing Portability Extensibility Additional Features Appeal Flavors BSD and System V Open Systems The Role of Standards and Consortiums SVID POSIX X Open COSE CDE War and Peace The UNIX Future 45 UNIX Flavors By S. Lee Henry The UNIX operating system has clearly emerged as one of the primary software platforms for the 90s providing distributed computing capabilities for even the most diverse networks. Its remarkable success has been due both to its portability and to its long history of innovation. In the more than 25 years that UNIX has been around it has had plenty of time to soak up good ideas from some of the sharpest computer people in the business. From AT T the University of California at Berkeley Sun Microsystems and many other companies UNIX has acquired a tremendous collection of powerful tools and maintained an open architecture that continues to invite development. UNIX today runs on three or four million computers maybe more. These computers range from very small personal computers to Crays. The concept of creating ad hoc programs by interconnecting commands is extremely powerful whether you re working on a laptop or a supercomputer. Because of its portability and because of an elegant design that appeals to developers UNIX has proliferated into many different flavors over the past couple decades. As much as this divergence has profited UNIX by providing many venues for innovation it has also frustrated the growing need for portable applications. Without an adequate market share any particular UNIX flavor has suffered from a dearth of software or at least a dearth of affordable software especially compared with personal computer systems such as those built by IBM