A, UNIX development
(1) In 1965, Massachusetts Institute of Technology (MIT), General Electric Company (GE) and AT & T Bell Labs joint development of Multics project, whose goal is to develop an interactive division has a multi-channel program processing capabilities when the operating system, Multics but the goal is too large and complex, project progress is far behind schedule, and finally announced its withdrawal from Bell labs.
(2) bell labs developer ken thompson (Ken • Thompson) not for their own game space travel multics to run upset when I saw a DPD-7 minicomputer systems equipped with nobody cares, then, it the development of the system DPD-7 is a new system to run their own game, this system is, we know of UNIX.
(3) In 1971, Ken Thompson • • colleague Dennis Ritchie invented C language; in 1973, the vast majority of UNIX system source code rewritten in C language, which lay the foundation for improving the portability of UNIX systems.
Unix versions:
sun os unix-based systems development, changed its name to solaris; IBM developed its own minicomputer system aix; HP developed its own HP-unix minicomputer systems;
Two, Linux development
The late 1980s, an old professor teaching in order to facilitate the development of their own minix system; and stubborn he would not let others modify their own system, so the University of Helsinki student Linus Torvalds of Finland on the basis of minix developed Linux kernel
At the same time, far in the United States richs launched the GNU project, hoping to commercialize the software open, common for everyone, so disclosure is applied in the GNU Linux kernel developers planned to coincide;
So they launched GPL agreement, all hoping to share the resources of friends, can share their research results in this plan for the development of the computer to make its own contribution; and not for commercial purposes; since then, we now see the Linux system appeared;