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IT320

OPERATING SYSTEM
CONCEPTS

Unit 3: Welcome to Linux

September 2012

Kaplan University

1

Unit 3: Reading & Assignments


Textbook Reading


Chapter 2 (section on Linux)



1 Discussion Question



PowerPoint Presentation


Due Tuesday, September 11


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Unit 3: Discussion Questions


Linux distributions include many applications you would normally
pay for on a Windows operating system.


Select two applications that are included with Linux and compare
them to applications you paid for to use on Windows.


Share with the class your experience using the applications, is the
functionality comparable, is it easy to use, would you recommend the
application to others?


Compare the Linux and Windows operating systems. What
differences and similarities have you found in Linux and Windows?
Be as detailed as possible.




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Unit 3: Linux PowerPoint


Create a presentation of at least 10 PowerPoint slides comparing
three Linux distributions.


Your presentation should include, but not be limited to, the hardware
requirements, features, applications and utilities included with your
Linux distribution.


Select one Linux distribution you would recommend for home use. Be
sure to defend your selection.


Also include a title slide and reference slide (not part of 10)



If you need any guidance using PowerPoint, you can refer to the
Atomic Learning section in the course home unit.

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Unit 3: Grading Rubric

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Grading Rubric


10 points


Three different Linux distributions selected



10 points


Requirements & features of Linux Distribution 1



10 points


Requirements & features of Linux Distribution 2



10 points


Requirements & features of Linux Distribution 3



10 points


Recommended Linux defended

Overview of Linux

6

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What is Linux?


“Linux is a free Unix
-
type operating system
originally created by Linus Torvalds with the
assistance of developers around the world.
Developed under the GNU General Public License ,
the source code for Linux is freely available to
everyone.”




Source: http://www.linux.org/


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Who created Linux?


Started in 1991 as a variant of UNIX



Created by Linus Torvalds at University of Helsinki,
Finland



Version 1.0 of the Linux Kernel released in 1994



Current version of Linux Kernel
-

Version 3.5.3

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Linux
-

GPL


Torvalds released Linux under GPL


GNU general public license (GPL)


Very different from standard commercial software
license


Author agrees to give away source code


Anyone is licensed to redistribute it in any form


What is advantage of releasing under GPL?

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Advantages of Linux?


Based on your readings for this class, name 2
advantages for using Linux.

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Why Linux?


OS is free


you supply the hardware


Fully customizable


Powerful & exploit features of hardware


Linux Kernel is small & compact


Highly compatible with other OS


Well Supported


Open Source

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Linux Kernel


Kernel = Operating System


Interacts with hardware system


Provides execution environment to applications



To learn more about
Linux Kernel
, try the O’Reilly
book “Understanding the Linux Kernel”



If you want to create your own, try the wiki site
-

http://kernelnewbies.org/

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Linux Kernel


Kernel is process manager not process



2 modes


User mode

In user mode, applications can not access the kernel.


Kernel mode


Kernel switches between modes


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Strengths & Weaknesses of Linux


What are some of the strengths to using
Linux as your operating system?




What are weaknesses to using Linux?

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Strengths of Linux


Stability


Security


Speed


Cost


Multiprocessing


Applications


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Linux Distributions


Linux Kernel doesn’t provide all features of OS


Complete OS should include:


Hardware devices


Installation programs


Networking and system admin utilities


Personal productivity applications


Documentation


Linux Distributions


Version of Linux with OS Kernel and these components

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Linux Distributions

Linux Distributions









Source: http://distrowatch.com/dwres.php?resource=major


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Linux Distributions (“Flavors”)


Ubuntu


Fedora


openSUSE


Debian


Mandriva


FreeBSD



Linux Mint


PCLinuxOS


Slackware


Gentoo


CentOS


Plus hundreds more

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Which distribution(s) of Linux have you worked with?

Hardware Requirements


Can run on very minimal hardware


Recommend that computer have minimum of:


1 GB of free disk space


64 MB of RAM


For Red Hat Enterprise Linux installations:


256 MB of RAM


300 MHZ CPU


800 MB of free disk space


Version Numbering


Version numbers assigned to:


Each release of Linux kernel


Each component of Linux distribution


Kernel version number components


Major version number


Minor version number


Patch
-
level number


Latest stable version for Linux Kernel


Version 3.5.3


Careers in Linux

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Linux Certification


Industry certification programs


Red Hat Certified Technician


Red Hat Certified Engineer


LPI Certification


Linux Certified Administrator (LCA) Certification


CompTia Linux+ Certification


Novell Certified Linux Engineer

Linux+


Complete 2 exams (60 questions each)


LX0
-
101 ($173)

Exam covers system architecture; Linux Installation and
package management; GNU and Unix commands;
devices, Linux file systems, and file system hierarchy
standard


LX0
-
102 ($173)

Exam covers shells, scripting & data management; user
interfaces & desktops; administrative tasks; essential
system services; networking fundamentals; security

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System Administrator


Linux is increasingly part of information technology
infrastructure of large organizations



Knowledge of Linux can set you on path to a
fulfilling and profitable career


The Complete Guide to Linux
System Administration

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Careers in Linux


System administrator


Network administrator


Software engineer


Trainer


Technical writer


Product marketing


Business consultant


Unit 3 Assignment

27

Kaplan University

Unit 3: Linux PowerPoint


Create a presentation of at least 10 PowerPoint slides comparing
three Linux distributions.


Your presentation should include, but not be limited to, the hardware
requirements, features, applications and utilities included with your
Linux distribution.


Select one Linux distribution you would recommend for home use. Be
sure to defend your selection.


Also include a title slide and reference slide (not part of 10)



If you need any guidance using PowerPoint, you can refer to the
Atomic Learning section in the course home unit.

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PowerPoint Assignment (slides)


Title


Overview / Preview of Presentation


What is Linux?


2
-
3 slides for Distribution 1


2
-
3 slides for Distribution 2


2
-
3 slides for Distribution 3


Recommended Distribution for home use & why


References

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Example


CentOS Linux


CentOS Linux


Started in 2003


Based on Red Hat Enterprise Linux (RSEL)


Same as RSEL with centOS logo & branding


Stands for “
C
ommunity
ENT
erprise OS”


Reliable server distribution


Updates released about every 2
-
3 years


Stable for enterprises, but not “latest & greatest”

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Example


CentOS Linux


Version & Architecture


Current version is CentOS 6.3 for I386 and x86_64
architecture


CentOS currently supports the following architecture


X86



based on Intel 8086 CPU


X86_64


64 bit processor


Ia64


Intel Itanium architecture

(primarily for servers)


Source:
https://www.centos.org/modules/smartfaq/faq.php?faqid=16

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Example


CentOS Linux


Features


Stable & Secure


Includes OpenOffice 2.0


No DVD software interface



Utilities


Updated by YUM (Yellowdog Updated Modifier)


GNOME & KDE GUI Interfaces


RPM (RedHat Package Manager)


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Source:
http://www.daniweb.com/news/
post971130.html

Any Questions?


Pam Van Hook



Email:


pvanhook@kaplan.edu



Personal email:

pvanhook@gmail.com



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