Unix Introduction

Transcript

1. Wednesday, October 12, 2011
2. In The Beginning Computer systems didn’t talk to each other Operating systems were bound to specific hardware Upgrading involved rewriting existing programs AND data Wednesday, October 12, 2011
3. 1965 Multics Bell Labs decided to build an operating system that should provide: simultaneous access to multiple users Good processing power High level data storage Wednesday, October 12, 2011
4. 1969 The End Of Multics After 4 years of research, Multics did not match project goals Bell labs management decided to stop all work on the system Wednesday, October 12, 2011
5. But ... not all was lost Wednesday, October 12, 2011
6. The Unix Team A small group of engineers decided not to give up “We didn’t want to lose the pleasant niche we occupied”. -- Dennis Ritchie Wednesday, October 12, 2011
7. It was the summer of 69 Wednesday, October 12, 2011
8. Coding Unix While Ken Thompson’s family went on their summer vacation, he and Dennis Ritchie stayed in the office to work Dennis Ritchie Wednesday, October 12, 2011
9. 4 Weeks Later Wednesday, October 12, 2011
10. A Job Well Done A working operating system A working shell A working text editor A working assembler Wednesday, October 12, 2011
11. Unix Philosophy Write programs that do ONE thing well Write programs that work together Write programs that handle text streams Wednesday, October 12, 2011
12. The Unix Man Pages All Unix systems are bundled with the system’s manual Every program needed a manual page to get into Unix DEMO: man cat Wednesday, October 12, 2011
13. Sharing Is Caring 1975 and on, Unix was distributed under a cheap academic license 1976-1977 Thompson teaches OS at Berkley After he left, students and other teachers began developing BSD Unix Wednesday, October 12, 2011
14. From School To Work 1984 Onwards. Commercial Unix Wednesday, October 12, 2011
15. Commercial Unix Until 1984, AT&T was forbidden to sell computer software due to monopoly regulations In 1984, AT&T and Bell Labs split. Bell took the phone and AT&T turned to AT&T Computer Systems AT&T Began selling Unix System V Other companies bought the Unix source and modified it to their specific hardware (Sun, SGI, HP, IBM) Wednesday, October 12, 2011
16. Unix & Free Software The GNU Project Started by Richard Stallman on 1984 The Goal: “Bring back the cooperative spirit that prevailed in the computing community in earlier days” By 1990, they were almost ready Richard Stallman Wednesday, October 12, 2011
17. GNU Project Status By 1990, All major components were written The missing piece - A working kernel Wednesday, October 12, 2011
18. And Then Came Linux Started as a kernel development project by Linus Torvalds Distributed as a free software “home brew” unix Wednesday, October 12, 2011
19. GNU Linux OS Anyone can develop their own distro GNU/Linux is everywhere Used by small and large companies alike Wednesday, October 12, 2011
20. Notable Linux Distros Debian Ubuntu Slackware Fedora, Red Hat, CentOs Wednesday, October 12, 2011
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23. Patrick Volkerding Wednesday, October 12, 2011
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25. Story Of Unix Unix Is Simple Unix Is Fun Unix Is Designed For Developers Unix Is Widely Spread Wednesday, October 12, 2011
26. Q & A Wednesday, October 12, 2011
27. Thank You Ynon Perek ynonperek@yahoo.com ynonperek.com Wednesday, October 12, 2011