it320 operating system concepts
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IT320 Operating System Concepts. Unit 3: Welcome to Linux September 2012. Unit 3: Reading & Assignments. Textbook Reading Chapter 2 (section on Linux) 1 Discussion Question PowerPoint Presentation Due Tuesday, September 11. Unit 3: Discussion Questions. - PowerPoint PPT PresentationTRANSCRIPT
IT320OPERATING SYSTEM CONCEPTSUnit 3: Welcome to LinuxSeptember 2012
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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 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 - 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 Linux22
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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 Assignment27
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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
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: [email protected]
Personal email: [email protected]
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