it320 operating system concepts unit 3: welcome to linux june 2011 kaplan university 1
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IT320OPERATING SYSTEM CONCEPTSUnit 3: Welcome to LinuxJune 2011
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Unit 3: Reading & Assignments Textbook Reading
Chapter 2 (section on Linux)
2 Discussion Questions
PowerPoint Presentation Due Tuesday, June 7, 2011
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Unit 3: Discussion Questions DQ1
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?
DQ2 Now that you have been introduced to Linux, 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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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 2.6
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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 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
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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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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
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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
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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
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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
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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
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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
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Unit 3 Assignment24
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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.
Kaplan University
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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