Sun Microsystem Notes

Topics: Unix, Operating system, Linux Pages: 7 (2006 words) Published: January 9, 2013
CASE Noter:
* Linux
* Microsoft NT
* Solaris 8

* In the early 1990s, UNIX-based workstations comprised 85-90% of the workstation market. * In the year of 98, NT workstations outshipped UNIX-based machines by more than 1 million units, -> but UNIX still accounted for 54% of workstation market revenue. * OS market shares in 99

* MS OS ran on 90%
* Apple on 4%
* Amiga and others
OS was in incompetible, => an app written for one OS could not run on another. UNIX were developed by AT&T, but licensed any interested party for a minimal fee => several different branches were developed -> FX the BSD version (Berkeley Software Distribution). Many of the hardware suppliers made their own version of UNIX whit competing features. (IBM, Hewlett-Packard, and Sun) => different workstation and server manufacturers’ UNIX-based systems diverged in several characteristics.

* servers = the backbone of networks (where printers , files and applications software are share) * “client-server” architecture.
* servers could do many different task .> from serving files to users to more complex ERP functions. * servers relied on multiple microprocessors => more reliable and scalable than a PC or workstation. The GNU project => The GNU public license, or GPL (nicknamed “copyleft”): * In 1984, Richard Stallman left his job at MIT’s -> to develop a reely available, UNIX-like operating system: the GNU Project * Stallman was frustrated in that he was not allow to improve source code of the program in his lap * Stallmen was concerned with the rise of proprietary software threatened the ability of programmers to share ideas and advance programming according to the norms of open science. * He was concerned that private sector firms might make proprietary modified versions of GNU software, -> defeating the purpose of his efforts, Stallman designed a new license for the software’s distribution. The GNU public license, or GPL (nicknamed “copyleft”), allowed free use of a program’s source code but required that any modifications be similarly made publicly available under the GPL. * Users could access to the source code, understand how a program worked, and could make changes to that program if desired. * By 1990, the GNU Project developed -> command processors, assemblers, compilers, and text editors. -> These programs became widely popular because they were compatible with UNIX LINUX:

* In 1991, Linus Torvalds wrote his own UNIX-like kernel to run on his Intel 386 chip-based PC. * Torvalds publiced the code under the GPL, -> and shortly thereafter began to receive emails from users containing “patches” * In 1992 -> Torvalds completed the GNU/Linux operating system. * Linux was free but complex to install => users were willing to pay for the convenience of getting them all on a CD. => distributors emerged and began to ship their own branded versions of Linux, enhancing it with programs written by their own developers. * By 1998, the Linux kernel had grown to more than 1.5 million lines of code, less than 5% of which was written by Torvalds himself * In 1998, Corel and Oracle, announced that they would “port” their software to Linux. * In 1999, HP, SGI and IBM all announced that they would support Linux on their hardware platforms * By the end 99, more than 100 Linux distributions were produced by a wide range of for-profit and non-profit organizations * Red Hat became the first Linux distribution firm to go public Customers:

* were often compagnies
* As the complexity of a server’s tasks increased, and as the tasks involved became more “mission-critical” for an organization, issues of reliability and customer support rose in prominence. * as the number of users increased, customers were more likely to consider issues of reliability and “scalability” Independent...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Case Study
  • Essay on Managing a Global Team at Sun
  • Oracle Sun Takeover Essay
  • Essay on Sun Microsystems
  • Case Sun Microsystem Essay
  • Scott Mcnealy: Chairman and Ceo of Sun Microsystems Essay
  • BUAD 647 Managing A Global Team Greg James At Sun Microsystems Inc Essay
  • Sun Micr Essay

Become a StudyMode Member

Sign Up - It's Free