Welcome to CIS 52

1
Welcome to CIS 52

• Instructor Charlie Verboom
• Adjunct Faculty Unix and NT Admin
• Full time Job
• Manager of Desktop Support
• Lawrence Berkeley National Laboratory
• Email
• home verboom_at_ix.netcom.com
• work ceverboom_at_lbl.gov

2
Introduction to UNIX

• Overview of the Unix Operating System

3
Topics

• The History of Unix
• (search for the guilty)
• Unix Components
• Unix at Solano Community College
• Unix is NOT DOS

4
Topics

• The History of Unix
• (search for the guilty)
• Unix Components
• Unix at Solano Community College
• Unix is NOT DOS

5
The History of Unix

• Bell Lab MIT work on MULTICS (60s)
• Bell Labs pull out of project (late 60s)
• Ken Thompson starts Bell Labs starts work on Unix
  using a PDP-7 from DEC.
• Written in Assembler
• Second Version written in B
• Rewritten with Dennis Ritchie using C language
  in 1973

6
Unix Turning Point

• Unix becomes widely available in 1975
• Given to Colleges, including UC Berkeley
• ATT develops one branch of the UNIX family
• System III is first supported release in 1982
• System V in the 90s
• UC Berkeley comes out with BSD
• BSD 4

7
One Idea Two Paths

• ATT Version
• Suns 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)

8
Convergence into ATT V5R4

• Most Commercial Systems are blending Unix
  capabilities into a System V R4 ATT 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.

9
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)

10
And yet More Standards

• OSF (Open Software Foundation)
• Chartered to define a UNIX like system
  independent of ATT 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

11
Topics

• The History of Unix
• (search for the guilty)
• Unix Components
• Unix at Solano Community College
• Unix is NOT DOS

12
Capabilities Overview

• Unix as an Operating System
• Unix as a programming and user tool
• System Features

13
Unix as an Operating System

• Like Any Operating System UNIX provides
• A File System
• Process Control
• Memory Management
• Device Control

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Unix as a programming and user tool

• User Interface (The Shell)
• Bourne
• Korn (David Korn of ATT)
• C (Bill Joy at UCB)
• bash ( Bourne again Shell)
• and 4 zillion more
• A Collection Of Utility Programs
• A Philosophy of Programming

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System Features

• Multi User, Multi Tasking
• User Selectable Command Languages
• Hierarchical File System
• Compatible File, Device and Interprocess I/O
• Large Software Base
• Highly Portable Kernel and Utilities

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Topics

• The History of Unix
• (search for the guilty)
• Unix Components
• Unix at Solano Community College
• Unix is NOT DOS

17
UNIX at Solano CC

• Linux on two different micro computers
• Windows based Telnet and FTP
• Micros in Room 507 on Ethernet
• primarily for Novell Based LAN
• Can be used to access Linux box using TCP/IP
  protocol which runs on ethernet along with Novell
  protocol

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Basic Process

• Use Accounting computer to clock in to the lab.
  (clock out when you leave)
• Log on to Novell Lan WIN95 workstation using
  default userid (WS7xx). No password.
• Click on TELNET ICON within UNIX Group

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More on Lab Procedures

• Insure that the TELNET HOST address is
  172.16.37.232 ( .231 is a backup server )
• Log on to Linux System using a Userid of the
  form Nxx where xx is a number assigned in class.
  (N1 through N60)
• The Password is password change it immediately
  using passwd command

20
Printing

• There is one printer on the Linux System, but it
  is only intended for instruction
• Use FTP to get files to your client micro or
  print them within the FTP utility program (which
  uses Windows Notepad when you want to view a
  file)
• Telnet client also has a toggle switch that will
  direct all std out to the printer

21
Accounting Computer Issues

• Unix requires a lab.
• Time collected on the accounting computer
  justifies funds for Solano CCs lab
• Students should put 8 hours per class in the
  lab.. Does not matter WHEN. The only
  requirement is that the lab must have a faculty
  person available before the attendance computer
  is turned on

22
Accounting Computer login

• Key in the last 4 digits of your SSN
• If more than one name comes up, select yours.
  (If you are a late add to the class, fill out a
  form that will be used to enter your name)
• Select starting session or ending session on
  the next screen
• Select class you are working on, if more than one.

23
Linux Specifics

• Linux is a UNIX clone freely distributed by the
  GNU General Public License
• Mostly POSIX.1 Compliant
• Developed by Linus Torvalds at the University of
  Helsinki, Finland with assistance from many Unix
  experts
• SCC is using the REDHAT 5 and 6 distributions

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Topics

• The History of Unix
• (search for the guilty)
• Unix Components
• Unix at Solano Community College
• Unix is NOT DOS

25
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

26
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