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William Nelson "Bill" Joy (born November 8, 1954) is an American computer scientist. Joy co-founded Sun Microsystems in 1982 along with Vinod Khosla, Scott McNealy and Andreas von Bechtolsheim, and served as chief scientist at the company until 2003. He played an integral role in the early development of BSD UNIX while a graduate student at Berkeley, and he is the original author of the vi text editor. He also wrote the 2000 essay "Why the Future Doesn't Need Us", in which he expressed deep concerns over the development of modern technologies. ==Early career== Joy was born in the Detroit suburb of Farmington Hills, Michigan to William Joy, a school vice-principal and counselor, and Ruth Joy. Joy received a Bachelor of Science in electrical engineering from the University of Michigan and a Master of Science in electrical engineering and computer science from the University of California, Berkeley in 1979. Joy's graduate advisor was Bob Fabry. As a UC Berkeley graduate student, Joy worked for Fabry's Computer Systems Research Group CSRG on the Berkeley Software Distribution (BSD) version of the Unix operating system. He initially worked on a Pascal compiler left at Berkeley by Ken Thompson, who had been visiting the University when Joy had just started his graduate work.〔 He later moved on to improving the Unix kernel, and also handled BSD distributions. Some of his most notable contributions were the ex and vi editors and csh. Joy's prowess as a computer programmer is legendary, with an oft-told anecdote that he wrote the vi editor in a weekend. Joy denies this assertion.〔("Bill Joy's greatest gift to man – the vi editor" ), Ashlee Vance, ''The Register'', September 11, 2003.〕 Other of his accomplishments have also been sometimes exaggerated; Eric Schmidt, CEO of Novell at the time, inaccurately reported during an interview in PBS's documentary ''Nerds 2.0.1'' that Joy had personally rewritten the BSD kernel in a weekend. According to a ''Salon'' article, during the early 1980s, DARPA had contracted the company Bolt, Beranek and Newman (BBN) to add TCP/IP to Berkeley UNIX. Joy had been instructed to plug BBN's stack into Berkeley Unix, but he refused to do so, as he had a low opinion of BBN's TCP/IP. So, Joy wrote his own high-performance TCP/IP stack. According to John Gage, BBN had a big contract to implement TCP/IP, but their stuff didn't work, and grad student Joy's stuff worked. So they had this big meeting and this grad student in a T-shirt shows up, and they said, "How did you do this?" And Bill said, "It's very simple — you read the protocol and write the code." Rob Gurwitz, who was working at BBN at the time, disputes this version of events.〔("BSD Unix: Power to the people, from the code" ), Andrew Leonard, ''Salon'', May 16, 2000.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bill Joy」の詳細全文を読む スポンサード リンク
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