The ugly, dirty and nasty history of unix
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This document provides a brief history of Unix and Linux operating systems. It describes the development of Unix at Bell Labs in the 1970s and the creation of Linux by Linus Torvalds in 1991. It also discusses key events like the rise of BSD, lawsuits between companies over source code, and the eventual dominance of Linux distributions.
The ugly, dirty and nasty history of unix
- 1. The ugly, dirty and nasty History of Unix by Helio Loureiro
- 2. ● Multics operating system ● Developed by Bell Labs and MIT ● Time-shared OS ● Very, very, very behind the schedule A long, long, long time ago...
- 3. AT&T Telecommunications monopoly in US Bell Labs were part of AT&T
- 4. 1970
- 5. Created by Dennis Ritchie and Ken Thompson Not time-shared, but based on single process that controlls preemption Multics without b*... or EUNICS First called as UNICS Later as UNIX Written in assembly for PDP-7
- 6. Hall of fame
- 7. SUMMER 1971
- 8. 1971 Dennis & Ken as cal cat chdir chmod cmp chmod cp chown date dc du ed
- 9. 1973
- 10. 1973
- 11. Write in C When I find my code in tons of trouble Friends and colleagues come to me, Speaking words of wisdom: Write in C As the deadline fast approaches, And bugs are all I can see, Somewhere, someone whispers Write in C Write in C, write in C Write in C, write in C Lisp is dead and buried, Write in C Unix became portable with C, being writted to PDP-11 https://www.youtube.com/watch?v=1S1fISh-pag
- 12. BSD - Berkeley Software Distribution ● Licensed by AT&T to Berkeley University in 1977 ● Development leaded by CSRG ● Improved drivers and services ● Later it was used as base to create Internet stacks, formally IP, TCP/IP.
- 13. 1980s and UNIX lineage 70 Bell Labs Version 4 Version 5 Version 6 Version 7 MERT RT 1.0 1BSD 4.1BSD 4.2BSD 32 V 4.3BSD Tahoe 4.3BSD Reno Version 8 XenixTS 1.0 TS 3.0 SYSIII SunOS Minix SunOS 3.5 Version 10 SYSV SCO 80 90 SYSVR4
- 14. Berkeley wins a tender to integrate Internet Protocol via software 4.3BSD Tahoe Net/1 is released 4.3BSD Reno Net/2 is released later
- 15. Berkeley is dragged into a lawsuit by AT&T after Net/2 release due source code release as public. Companies like Sun were already using this code.
- 16. 1983 Richard Stallman, after a struggle to get a Xerox printer to work properly, get a glimpse about freedom and free software. He writes the GNU MANIFESTO.
- 17. Be thankful to your printer. It made GNU project possible.
- 18. 1991 - Linux arises
- 19. From: torvalds@klaava.Helsinki.FI (Linus Benedict Torvalds) Newsgroups: comp.os.minix Subject: What would you like to see most in minix? Summary: small poll for my new operating system Message-ID: Date: 25 Aug 91 20:57:08 GMT Organization: University of Helsinki Hello everybody out there using minix - I'm doing a (free) operating system (just a hobby, won't be big and professional like gnu) for 386(486) AT clones. This has been brewing since april, and is starting to get ready. I'd like any feedback on things people like/dislike in minix, as my OS resembles it somewhat (same physical layout of the file-system (due to practical reasons) among other things). I've currently ported bash(1.08) and gcc(1.40), and things seem to work. This implies that I'll get something practical within a few months, and I'd like to know what features most people would want. Any suggestions are welcome, but I won't promise I'll implement them :-) Linus (torvalds@kruuna.helsinki.fi) PS. Yes - it's free of any minix code, and it has a multi-threaded fs. It is NOT protable (uses 386 task switching etc), and it probably never will support anything other than AT-harddisks, as that's all I have :-(.
- 20. 90 and AT&T lawsuit against Berkeley 1993 Berkeley and AT&T reaches a settlement. AT&T code is removed. 4.4BSD-Lite is released.
- 21. Dr. Dobb's journal starts a serie of articles about how to write a functional BSD system to PC386 machines. Welcome 386BSD, based on 4.4BSD-Lite.
- 23. FreeBSD & NetBSD As fork from 386BSD, 2 projects arise: - FreeBSD (i386) - NetBSD (multi arch)
- 24. NetBSD & OpenBSD OpenBSD starts in 1995 as fork from NetBSD. Focused on security in multi architecture.
- 25. Linux & SCO - previously known as Caldera OpenLinux In 2004, Caldera OpenLinux, who acquired SCO UNIX, sues Linux and Linux distribuitions for copyright infrigiment - kernel using parts of its UNIX code
- 26. In 2009 Caldera OpenLinux/SCO is terminated by bankruptancy. They lost the lawsuit against Linux in 2011.