UNIX started by moment a research group of AT&T Bell Laboratories, General Electric and of Massachusetts Institue Of Technology, cooperate below/under project of MULTICS ( Multiplexed Information Computing System) year 1968. Two people researcher of so called AT&T Bell Laboratories of Ken Thompson and of Dennis Ritchie develop UNIX together with all other researchers under project of MULTICS this. UNIX meant...
...to become operation system which is and multiuser of multitasking and to fulfill desire of UNIX rewritten in the year 1973 using Ianguage of C ( UNIX is first time written to use Ianguage of B ). This enable UNIX to be able to in re- develop to various platform of hardware without having to write down specific code to every platform. Amenity of this develop still stay hitherto so that variant - variant of UNIX available of PC until Super Computer .
Along growth of UNIX, Bell isn't it system operate for this formal in institutions and education, of him to Computer Science department of University of Berkeley California, finally yield some cloning of UNIX it selves with code of BSD ( Berkeley Software Distribution). Development of this distribution is supported full of by DARPA ( Defense Advanced Research Projects Agency), including super protocol of excitement of TCP / IP becoming soul of Internet the popularness now. But this started appearance all kinds of type of UNIX, hence to solve problem this Institute Electrical Engineers of ( IEEE) develop standard of ANSI ( American National Standards Institute) new is so called as standard of POSIX ( Portable Operating System Interface Computer Environments for). This Standard define how system operating like UNIX / UNIX clone operated, this standard also arrange in detail usage of kernel calls (rutin system) and system interface. Standard of ANSI become billows is problem oves compatibility and assist development of further UNIX.
More and more distribution him of system like UNIX happened, and with all excess had by system it self, however one matter become clearly: UNIX developed for workstation and mini of computer. Mean all students at big University cannot use the the variant to try application of UNIX at Personal Computer ( Their PC ) in final 1980 and early 1990. Even although Professor Andrew ( Andy) Tanenbaum have created MINIX, mini variant of UNIX, that thing do not have all function of UNIX wanted by all moment students that, priority for to so called student of Linus Torvalds. And emerge of LINUX as variant of UNIX most flexible walk most of all platforms of hardware existing this time.
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