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The Development History of Linux and Unix

1. In the 1960s, MIT developed the time-sharing operating system (CTSS), which realized that multiple terminals shared a host for computing work.

2. Multics of Bell,MIT and GE (General Electric) around 1965. However, around 1969, due to the backwardness of the project and the shortage of funds, although the project continued to study, Bell still withdrew from the research work of the project.

3. In 1969, Ken developed the Multics system called Unics.

4. In 1973, Ken and Dennis Ritchie jointly implemented the UNIX operating system in C language.

5. In 1977, BSD, an important branch of UNIX, came into being. After obtaining the UNIX kernel, 喜悦, BILL of the University of California, Berkeley, began to modify the version of his machine and named it BSD, which was the predecessor of FreeBSD that could later be installed on x86 machines (founder of SUN).

6. In 1979, due to the good portability and strong performance of UNIX, many companies began the development of the UNIX operating system (IBM---AIX,SUN-solaris,HP-HP-UX). Later, AT&T saw that UNIX was so popular that it launched the seventh edition of SYSTEM V UNIX, but it claimed copyright.

7. In 1984, Professor Tan Ningbang's Minix operating system with X86 architecture was born.

8. In 1984, RichardStallman of the artificial intelligence laboratory founded the core idea of GUN,GUN (Free Software Movement). The core idea is source program, free acquisition, free adaptation, free distribution, and free use.

9. In 1991, LinusTorvalds in Finland wrote kernel programs using tools such as gcc,bash, which was the embryonic form of Linux. After everyone's continuous modification and improvement, and finally have the current linux operating system kernel.

II. Open source movement

GPL,GPLv2, GPLv2

LGPL

BSD agreement

Apache agreement

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