IT320OPERATING SYSTEM CONCEPTSUnit 3: Welcome to LinuxNovember 2011

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Unit 3: Reading & Assignments Textbook Reading

Chapter 2 (section on Linux)

1 Discussion Question

PowerPoint Presentation Due Tuesday, November 8

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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 Linux6

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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 is Version 3.0

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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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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

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?

The Complete Guide to Linux System Administration

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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

The Complete Guide to Linux System Administration

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Version Numbering

Version numbers assigned to: Each release of Linux kernel Each component of Linux distribution Linux distributions

Most users select latest available version

The Complete Guide to Linux System Administration

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Version Numbering (continued) Kernel version number components

Major version number Minor version number

Even indicates production release Odd indicates development release

Patch-level number

The Complete Guide to Linux System Administration

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Linux Certification

Industry certification programs Red Hat Certified Technician Red Hat Certified Engineer LPI Certification Linux Certified Administrator (LCA)

Certification Linux+ Certification Novell Certified Linux Engineer

The Complete Guide to Linux System Administration

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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 Assignment25

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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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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 “Community Enterprise 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

Hardware “Installation DVDs and installable live CDs

(with GNOME) for i386 and x86_64 processors; older versions (3.x and 4.x) also available for Alpha, IA64 and IBM z-series (s390, s390x) processors.”

Add my own comments here

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

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Example – centOS Linux

Features Stable & Secure Includes OpenOffice 2.0 No DVD software interface What else??

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 HookEmail: pvanhook@kaplan.edu

Office Hours via AOL IM Thursday: 9:00 pm – 11:00 pm ET Sunday: 10:00 pm – 11:00 pm ET By appointment as needed

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