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Kaplan University IT320 OPERATING SYSTEM CONCEPTS Unit 3: Welcome to Linux June 2011 1 Unit 3: Reading & Assignments 2 Textbook Reading Chapter 2 (section on Linux) 2 Discussion Questions PowerPoint Presentation Due Tuesday, June 7, 2011 Kaplan University Unit 3: Discussion Questions 3 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. Kaplan University Unit 3: Linux PowerPoint 4 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 Unit 3: Grading Rubric 5 Kaplan University 6 Overview of Linux Kaplan University What is Linux? 7 “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/ Kaplan University Who created Linux? 8 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 Kaplan University Linux - GPL 9 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? Kaplan University Why Linux? 10 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 Kaplan University Linux Kernel 11 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/ Kaplan University Linux Kernel 12 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 Kaplan University Strengths of Linux 13 Stability Security Speed Cost Multiprocessing Applications Kaplan University Linux Distributions 14 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 Kaplan University Linux Distributions Linux Distributions 16 http://distrowatch.com/dwres.php?resource=major Kaplan University Linux Distributions (“Flavors”) 17 Ubuntu Fedora openSUSE Debian Mandriva FreeBSD Linux Mint PCLinuxOS Slackware Gentoo CentOS Plus hundreds more Kaplan University 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 18 The Complete Guide to Linux System Administration Version Numbering Version numbers assigned to: Each release of Linux kernel Each component of Linux distribution Linux distributions Most users select latest available version 19 The Complete Guide to Linux System Administration Version Numbering (continued) Kernel version number components Major version number Minor version number Even indicates production release Odd indicates development release Patch-level number 20 The Complete Guide to Linux System Administration 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 21 The Complete Guide to Linux System Administration 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 22 The Complete Guide to Linux System Administration Careers in Linux System administrator Network administrator Software engineer Trainer Technical writer Product marketing Business consultant 23 The Complete Guide to Linux System Administration 24 Unit 3 Assignment Kaplan University Unit 3: Linux PowerPoint 25 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 PowerPoint Assignment (slides) 26 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 Kaplan University Example – centOS Linux 27 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” Kaplan University Example – centOS Linux 28 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 Kaplan University Example – centOS Linux 29 Features Source: Stable http://www.daniweb.com/news/ post971130.html & 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) Kaplan University Any Questions? 30 Pam Van Hook Email: [email protected] Kaplan University