Английская Википедия:Ancient UNIX
Ancient UNIX is any early release of the Unix code base prior to Unix System III, particularly the Research Unix releases prior to and including Version 7 (the base for UNIX/32V as well as later developments of AT&T Unix).
After the publication of the Lions' book, work was undertaken to release earlier versions of the codebase. SCO first released the code under a limited educational license.Шаблон:Citation needed
Later, in January 2002, Caldera International (now SCO Group) relicensed (but has not made available) several versions under the four-clause BSD license, namely:[1][2]
- Research Unix: (early versions only)
- Version 1 Unix
- Version 2 Unix
- Version 3 Unix
- Version 4 Unix
- Version 5 Unix
- Version 6 Unix
- Version 7 Unix
Шаблон:As of, there has been no widespread use of the code, but it can be used on emulator systems, and Version 5 Unix runs on the Nintendo Game Boy Advance using the SIMH PDP-11 emulator.[3] Version 6 Unix provides the basis for the MIT xv6 teaching system, which is an update of that version to ANSI C and the x86 or RISC-V platform.
The BSD vi text editor is based on code from the ed line editor in those early Unixes. Therefore, "traditional" vi could not be distributed freely, and various work-alikes (such as nvi) were created. Now that the original code is no longer encumbered, the "traditional" vi has been adapted for modern Unix-like operating systems.[4]
SCO Group, Inc. was previously called Caldera International. As a result of the SCO Group, Inc. v. Novell, Inc. case, Novell, Inc. was found to not have transferred the copyrights of UNIX to SCO Group, Inc.[5] Concerns have been raised regarding the validity of the Caldera license.[6][7]
The Unix Heritage Society
The Unix Heritage Society was founded by Warren Toomey.[8][9][10][11][12][13][14]Шаблон:Overcite First edition Unix was restored to a usable state by a restoration team from the Unix Heritage Society in 2008. The restoration process started with paper listings of the source code which were in Unix PDP-11 assembly language.[15][16]
References
External links
- Pamela Jones (August 23, 2003) Ancient UNIX Released Under What Terms?, Groklaw
- The Unix Heritage Society (TUHS), for the preservation and maintenance of historical UNIX systems
- code, disk images, and related at TUHS
- Unix First Edition Manual Pages
- Restoration of 1st Edition UNIX kernel sources from Bell Laboratories
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite web MP3 44:34
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ The Restoration of Early UNIX Artifacts