>По решению суда половина спорных файлов системы была подарена BSD, а половину разработчикам BSD пришлось переписать с нуля.Так все-таки в FreeBSD есть код из UNIX?
Русскоязычная статья в Википедии не точная, не понимаю кто её писал, но на английском все гораздо подробнее с именами и датами.
n 1974, Professor Bob Fabry of the University of California, Berkeley, acquired a Unix source license from AT&T. Supported by funding from DARPA, the Computer Systems Research Group started to modify and improve AT&T Research Unix. They called this modified version "Berkeley Unix" or "Berkeley Software Distribution" (BSD), implementing features such as TCP/IP, virtual memory, and the Berkeley Fast File System. The BSD project was founded in 1976 by Bill Joy. But since BSD contained code from AT&T Unix, all recipients had to get a license from AT&T first in order to use BSD.[8]
In June 1989, "Networking Release 1" or simply Net-1 – the first public version of BSD – was released. After releasing Net-1, Keith Bostic, a developer of BSD, suggested replacing all AT&T code with freely-redistributable code under the original BSD license. Work on replacing AT&T code began and, after 18 months, much of the AT&T code was replaced. However, six files containing AT&T code remained in the kernel. The BSD developers decided to release the "Networking Release 2" (Net-2) without those six files. Net-2 was released in 1991.[8]
Birth of FreeBSD
In 1992, several months after the release of Net-2, William Jolitz and Lynne Jolitz wrote replacements for the six AT&T files, ported BSD to Intel 80386-based microprocessors, and called their new operating system 386BSD. They released 386BSD via an anonymous FTP server.[8] The development flow of 386BSD was slow and after a period of neglect, a group of 386BSD users decided to branch out on their own and create FreeBSD so that they could keep the operating system up to date. On 19 June 1993, the name FreeBSD was chosen for the project.[9] The first version of FreeBSD was released in November 1993.[10][8]
In the early days of the project's inception, a company named Walnut Creek CDROM, upon the suggestion of the two FreeBSD developers, agreed to release the operating system on CD-ROM. In addition to that, the company employed Jordan Hubbard and David Greenman, ran FreeBSD on its servers, sponsored FreeBSD conferences and published FreeBSD-related books, including The Complete FreeBSD by Greg Lehey. By 1997, FreeBSD was Walnut Creek's "most successful product". The company later renamed itself to The FreeBSD Mall and later iXsystems.[11][12][13]
Today, FreeBSD is used by many IT companies such as IBM, Nokia, Juniper Networks, and NetApp to build their product.[14][15] Certain parts of Apple's Mac OS X operating system are based on FreeBSD.[16] The PlayStation 3 operating system also borrows certain components from FreeBSD,[5][6] while the PlayStation 4 operating system is derived from FreeBSD 9.[17] Netflix,[18] WhatsApp,[19] and FlightAware[20] are also examples of big, successful and heavily network-oriented companies which are running FreeBSD.
Lawsuit
386BSD and FreeBSD were both derived from BSD releases.[14] In January 1992, Berkeley Software Design Inc. (BSDi) started to release BSD/386, later called BSD/OS, an operating system similar to FreeBSD and based on 4.3BSD Net/2. AT&T filed a lawsuit against BSDi and alleged distribution of AT&T source code in violation of license agreements. The lawsuit was settled out of court and the exact terms were not all disclosed. The only one that became public was that BSDi would migrate their source base to the newer 4.4BSD-Lite2 sources. Although not involved in the litigation, it was suggested to FreeBSD that they should also move to 4.4BSD-Lite2.[21] FreeBSD 2.0, which was released in November 1994, was the first version of FreeBSD without any code from AT&T.[22]
