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UNIX introduction
The document provides an introduction to UNIX and the history of UNIX and Linux. It discusses the following key points: - UNIX was created in 1969 at Bell Labs to be multi-tasking and multi-user to help scientists with their calculations. It has a philosophy of everything being treated as a file. - Over time, UNIX split between proprietary UNIX variants from companies like Sun and IBM and non-proprietary variants like BSD and Linux. - The GNU project was launched in 1984 to create a free UNIX-like operating system. Linux was created in 1991 by Linus Torvalds as a kernel based on UNIX concepts. - When the GNU software was combined with the Linux kernel, it
UNIX introduction
- 1. UNIX Introduction UNIX Introduction and history
- 2. Introduction Your trainer… Title: Network Engineer Education: Master Degree in Network Engineering, BSC degree in Computer Engineering Experience : Mcse,Mcitp,MCIT UNIX/Linux trainer. Contact: thephilosopher10@gmail.com Mob.01113555023 Mohammed Hassan
- 3. Introduction Objectives By completingthis presentation , you will be able to: Understand Unix. Its philosophy, different Unix families. Discover the free world. Different licenses. Discover Linux. From its history to the application in company.
- 4. Introduction Topics Plan: Unix. Its philosophy and its history. From Unix to Linux.
- 5. Introduction Unix History and philosophy
- 6. Unix Preview Here’s what we’llsee: Unix utility. Unix history. Different Unix. Targets of Unix. Unix philosophy
- 7. Unix Unix utility Unix have to: Work 24/24, 7/7. Being multi tasks. Being multi users. Make scientists calculation. Being perfectly reliable.
- 8. Unix Unix History Here’s Unix history 1969 1976 1978 1991 Creation by Ken Thompson and Denis Ritchie from Creation of Linux Bell Labs by Linus Torvalds Split between Creation of BSD and type Apple V Unix
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- 10. Unix The different Unix Proprietary Unix Solaris Sun AIX IBM HP-UX HP MacOS X Apple
- 11. Unix The different Unix BSD- Berkeley Software Distribution Licensed 3 major branches : FreeBDS NetBSD OpenBSD Server/Security oriented
- 12. Unix The different Unix ary Un ix are Pr opriet ld for eated and so cr comp uters s pecific (ex ample aris/S PARC) Sol
- 13. Unix Targets of Unix According to its design, Unix targets are: Scientist University Army States organization
- 14. Unix Unix philosophy Philosophy ofUnix system Everything is a file Hard Drive, CDROM drive, CPU … Task segmentation A program must be portable Write code quickly and to share with the community Correct bugs quickly
- 15. Unix Unix philosophy Advantages anddisadvantages of proprietary Unix: Advantages Disadvantages Stability Buy cost High load Resistance Maintenance cost Security Not User Friendly
- 16. UNIX Quiz The BSD system is a different Unix system MacOSX is not based on the Unix system UNIX system is a multi-task system UNIX system is a multi-user system
- 17. Introduction From Unix to GNU/Linux History and philosophy
- 18. From Unix toGNU/Linux Preview Here’s what we’ll see: Open source softwares. Free softwares GNU / Linux. Applications.
- 19. From Unix toGNU/Linux Open source software There are two types of software Binary form Sources unavailable Not human understandable Original form (Source) O Human understandable Access to the sources.
- 20. From Unix toGNU/Linux Open source software Concept of Open Source and Proprietary system Open Sources Software – Offer the possibility for the user to access the source code of the application Proprietary Software – Doesn’t offer the access to the source code
- 21. From Unix toLinux Free software To be free a software must respect this 4 rules: Free to Free to read the code execute Free to Free to improve redistribute
- 22. From Unix toLinux GNU / Linux FSF and GNU Free Software Foundation 1984 by Richard Stallman A Free clone of Unix free free as in “free speech”, not as in “free beer” GNU-GNU’s not UNIX GPL-General Public License A legal frame for the free software Actual version : 3
- 23. From Unix toLinux GNU / Linux The birth of the Linux Kernel Created in 1991 by Linus Torvalds Minix clone Based on concepts and Unix philosophy Sources available for free on Internet. A community appeared on internet Linux is not an operating system
- 24. From Unix toLinux GNU / Linux Very early Richard Stallman convinces Linus Torvalds to put the kernel v 0.12 under GPL license GNU softwares are then adapted to work with Linux kernel The Linux kernel and GNU softwares make a true operating system GNU + Linux Kernel = GNU/ Linux
- 25. From Unix toLinux Distributions What’s a distribution A distribution contains often: A Kernel (sometimes modified). A software library. An installation program. A package manager.
- 26. From Unix toLinux Applications The most used distributions:
- 27. From Unix toLinux Application GNU/Linux is used in company for: Web server FTP server DHCP/DNS server Proxy/Cache server Firewall Embeded systems
- 28. From Unix toLinux Applications Advantage and disadvantages de Linux : Advantages Disadvantages Stability No After Sale services Reliability Lack of Knowledge Security Not User-friendly
- 29. From Unix toLinux Quizz The FSF was created by Richard Stallman GNU is Linux Richard Stallman created the Linux kernel There are many Linux distributions on the market
- 30. From Unix toLinux Stop and Think Do you have any questions ?