Essay - Unix is Unix Still Used Today? Unix...simply Put, is a...

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UNIX...simply put, is a robust and scalable operating that has been in existence for almost over 30 years. In some cases, it ***** been called "the grandfather of operating systems" as a result of the ***** it has ***** extant. The OS was developed in the 1960s and born out ***** ***** need by Bell Laboratories in the United States to have an operating system that could be use ***** its staff to assist *****m in their scientific ***** academic research. It is older than Microsoft's brand of ***** systems and considered more secure and less bug/error-free! "***** was designed for users who were largely com*****er scientists and AT&T (the owners ***** Bell *****) made UNIX available at nom*****al cost to ***** users, with whom it became popular. This helped to create a market for UNIX, at a time when technologic*****l changes had ********** created a need for a portable multi-user operating system. As a result ***** began to be adopted by non-academic users in the 1980's as it ********** commercially available. Several standards are now being worked *****, and UNIX is steadily becoming the standard operating system in many environments. (Wynne, 1997)"

UNIX ***** still in used ***** millions of server worldwide and despite various variants developed over the years, the basic kernel remains the same ***** variations made depending on the needs of an individual or *****ganization. A more ***** offshoot - although Linus Torvalds at times won't admit it ***** is the Linux family of oper*****ing *****. "The market for the UNIX system continues to expand. IDC estimates the ***** at US$ 39 billion in 1996 and forecasts ***** market ***** be US$ 50 billion in the year 2000. In add*****ion, the installed base of the UNIX system has an estimated value ***** *****$ 122 *****. These market estimates lead to several conclusions about the ***** system, as follows: An annual market of US$ 39 billion ***** large enough ***** remain attractive to ***** suppliers and to provide sufficient revenue ***** fund continuing high levels ***** investment in support and product enhancement. The UNIX system's growth rates, which appear modest in comparison to the unit shipment growth of newer products, are anchored by an enormous ***** base. High ***** shipment growth rates ***** typical of new entries in a marketplace. (UNIX Systems Cooperative Promotion Group, 2006)"

***** ***** the main reasons for UNIX's unparalleled use and steady market ***** is its portability, multi-user and multi-tasking ability especially ***** it comes ***** deployment in servers and workstations. In the client-server architecture, UNIX was ********** in the development of the Internet as well as networking environment for ***** types of computers whether mainframe, micro***** or PCs. The basic property of the UNIX OS is the kernel which sources out the commands ***** the whole system from booting, execution to shutdown. "The kernel is ***** part carries out basic operating ***** functions such as accessing files, allocating mem*****y and handling communications. A shell provides


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