Software: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.[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
- UNIX/32V
(As of 2022), 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][excessive citations] 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
- ↑ Johnson II, Dion L. (2002-01-24). "Liberal license for ancient UNIX sources". http://www.lemis.com/grog/UNIX/.
- ↑ Broderick, Bill (January 23, 2002). "Dear Unix enthusiasts". Caldera International. http://www.tuhs.org/Archive/Caldera-license.pdf.
- ↑ Singh, Amit (August 2004). "UNIX® on the Game Boy Advance". http://www.kernelthread.com/publications/gbaunix/.
- ↑ "The Traditional Vi". http://ex-vi.sourceforge.net/.
- ↑ "10th Circuit Court of Appeals Decision". http://www.groklaw.net/pdf3/SCOvNovell10-4122.pdf.
- ↑ Warren Toomey. "The Push to Get Free Unix Licenses". https://wiki.tuhs.org//doku.php?id=events:free_licenses.
- ↑ "Why BSD/OS is the best candidate for being the only tested legally open UNIX.". https://virtuallyfun.com/wordpress/2018/11/26/why-bsd-os-is-the-best-candidate-for-being-the-only-tested-legally-open-unix/.
- ↑ "Interview with Warren Toomey, Founder of the Unix Heritage Society" (in en). 13 January 2023. https://www.usenix.org/publications/loginonline/interview-warren-toomey-founder-unix-heritage-society.
- ↑ Davis, A. Jesse Jiryu (June 14, 2017). "Assembling the history of Unix". LWN.net. https://lwn.net/Articles/725297/.
- ↑ Jude, Allan (October 13, 2022). "Warren Toomey interview". https://www.bsdnow.tv/476. MP3 44:34
- ↑ Chirgwin, Richard. "Samizdat no more: Old Unix source code opened for study" (in en). theregister.com. https://www.theregister.com/2017/03/30/old_unix_source_code_opened_for_study/.
- ↑ "Warren Toomey : contributions". https://www.researchgate.net/scientific-contributions/Warren-Toomey-51052769.
- ↑ "SCO may not know origin of code, says Australian UNIX historian" (in en). The Sydney Morning Herald. 9 September 2003. https://www.smh.com.au/technology/sco-may-not-know-origin-of-code-says-australian-unix-historian-20030909-gdhd04.html.
- ↑ Toomey, Warren (2010). "First Edition Unix: Its Creation and Restoration". IEEE Annals of the History of Computing 32 (3): 74–82. ISSN 1934-1547. https://muse.jhu.edu/article/394148. Retrieved 15 June 2023.
- ↑ Toomey, Warren (July 2010). "First Edition Unix: Its Creation and Restoration". IEEE Annals of the History of Computing 32 (3): 74–82. doi:10.1109/MAHC.2009.55.
- ↑ The Restoration of Early UNIX Artifacts
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
![]() | Original source: https://en.wikipedia.org/wiki/Ancient UNIX.
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