1. Welcome to CIS 52
WELCOME
WELCOME
WELCOME
W E L C O M E

2. Introductions are in order
Your name
Something about yourself
Why are you taking this class?
What are your expectations?

3. Topics Introduction and History of UNIX UNIX: LINUX Components
LINUX at Solano Community College
LINUX is NOT DOS

4. Topics Introduction and History of UNIX UNIX: LINUX Components
LINUX at Solano Community College
LINUX is NOT DOS

5. The Heritage of UNIX: LINUX
What was needed:
A system that could do more than one thing at a time. A multitasking system.
A system that could handle one or more users at a time. A multiuser system.
A system that could share selected data with others.

6. The Heritage of UNIX: LINUX
Bell Lab & MIT work on MULTICS (60’s)
Bell Labs pull out of project (late 60’s)
Ken Thompson with Bell Labs starts work on UNIX using a PDP-7 from DEC.
Written in Assembler

7. The History of UNIX History (continued)
Second Version written in ‘B’
3 advantages:
Multiuser
Direct user to user communication
Data and program sharing
Rewritten with Dennis Ritchie using ‘C’ language in 1973

8. UNIX Turning Point UNIX becomes widely available in 1975
Given to Colleges, including UC Berkeley
AT&T develops one branch of the UNIX family
System III is first supported release in 1982
System V in the 90’s
UC Berkeley comes out with BSD
BSD 4

9. One Idea: Two Paths ATT Version Sun’s Solaris 2.x
UNIXware (now part of SCO)
IRIX (Silicon Graphics)
HP-UX
BSD
Sunos 4.x
BSDi
Mach (Nextstep is also an extension of Mach)
Ultrix (from DEC)

10. Convergence AT&T V5R4
Most Commercial Systems are blending UNIX capabilities into a System V R4 ‘AT&T variant’ with BSD ideas and tools mixed in.
System Administration are generally Vendor Specific
LINUX is now the most famous version, and it is free.

11. The Search for Standards
POSIX (Portable Operating System Interface Definition)
Defined by IEEE
Provides a baseline of compatibility for UNIX variants
Sited by large customers in procurements
SVID (System V Interface Definition)
Defined by ATT (UNIX System Labs)

12. And yet More Standards OSF (Open Software Foundation)
Chartered to define a UNIX like system independent of AT&T and SVID
OSF/1 shipped in 1990 based on Carnegie Mellons Mach Operating System
upwardly compatible with POSIX
XOPEN (International Consortium of UNIX vendors). Publishes Portability Guides

13. Introduction to UNIX using LINUX
LINUX: A Product of the INTERNET
Developed by Linus Torvalds
Open Source and free distribution
UNIX work-alike

14. Open System Architecture
Source code immediately available via the INTERNET
Enhancements and extensions from all over the world.
Incorporates features from UNIX BSD & System V
Free, FREE, FREE (Hooray)

15. Sir LINUX the humorous
Unlike its sibling UNIX with LINUX humor abounds
In LINUX  less is more
Standard Text editor vi (for visual mode) is now vim (vi plus more)
joe – joe’s own editor (written by Joseph Allen)

16. What’s sooo good about LINUX?
Large selection of applications
Rapid support for peripheral devices
Multi-platform operating environments
Code is free for modification and distribution

17. It’s soooo Good Two trends: LINUX is generic but UNIX is not
Advances in hardware tecnology
Faster, Cheaper
Demise of Proprietary systems
because of rapidly changing hardware
LINUX is generic but UNIX is not
LINUX supports both user and server functions in one operating system.

18. Topics The History of UNIX : LINUX UNIX: LINUX Components
LINUX at Solano Community College
LINUX is NOT DOS

19. Capabilities Overview
UNIX: LINUX as an Operating System
UNIX: LINUX as a programming and user tool
System Features

20. LINUX as an Operating System
Like Any Operating System LINUX provides:
A File System
Process Control
Memory Management
Device Control

21. LINUX as an Operating System

22. LINUX As a Tool User Interface (‘The Shell’)
Bourne
Korn (David Korn of AT&T)
C (Bill Joy at UCB)
bash ( Bourne again Shell)
and 4 zillion more
A Collection Of Utility Programs
A Philosophy of Programming

23. System Features Multi User Multi Tasking
Many users can be logged in simultaneously
Multi Tasking
Many tasks can be executing simultaneously
User Selectable Command Languages
Many “Shells” available
Hierarchical File System

24. System Features (cont.)
Hierarchical File System /
(aka root)
/home
/tmp
/bin
/Alice
/Bobby
/Carol

25. System Features (cont.)
Compatible File, Device and Interprocess I/O
Large Software Base
Highly Portable Kernel and Utilities

26. System Features (cont.)
GUI’s (Graphical User Interfaces)
X-Windows
Gnome
KDE
Networking Utilities
(sendmail)
Remote Access (xrdp rdesktop)
Compatibility Utilities
dosemu, wine

27. Topics The History of LINUX LINUX Components LINUX is NOT DOS
LINUX at Solano Community College
LINUX is NOT DOS

28. LINUX at Solano College
Raspberry Pi 3 –
All in one
“credit card” computer
Ethernet
Wi-Fi
Bluetooth

29. Printing
There is one printer on the Linux System, but it is only intended for instruction
Use SFTP to get files to your client micro or print them within the SFTP utility program (which uses Windows Notepad when you want to view a file)

30. Linux Specifics
LINUX is a UNIX clone freely distributed by the GNU General Public License
Mostly POSIX.1 Compliant
Developed by Linus Torvalds ’95-6 at the University of Helsinki, Finland with assistance from many UNIX experts

31. Topics The History of LINUX LINUX Components
LINUX at Solano Community College
LINUX is NOT DOS

32. UNIX IS NOT DOS Just a few of the DOS commands were modeled after Unix
(mkdir, rmdir)
Unix comes with a much larger group of utilities, with no standardization in syntax
Unix is much more powerful and complex
multi user, multitasking,
built in networking

33. Unix Is NOT DOS
Programming capability is included in each of the shells
Input/output
selection (if, case)
looping (while, until)
signal trapping
use of Unix shell redirection and pipes
inclusion of any unix utility within a shell script