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  Oracle Linux SystemAdministration Activity Guide D74508GC10Edition 1.0 August 2012D78746  Copyright © 2012, Oracle and/or its affiliates. All rights reserved.Disclaimer  This document contains proprietary information and is protected by copyright and other intellectual property laws. You may copy andprint this document solely for your own use in an Oracle training course. The document may not be modified or altered in any way.Except where your use constitutes fair use under copyright law, you may not use, share, download, upload, copy, print, display,perform, reproduce, publish, license, post, transmit, or distribute this document in whole or in part without the express authorizationof Oracle.The information contained in this document is subject to change without notice. If you find any problems in the document, pleasereport them in writing to: Oracle University, 500 Oracle Parkway, Redwood Shores, California 94065 USA. This document is notwarranted to be error-free. Restricted Rights Notice If this documentation is delivered to the United States Government or anyone using the documentation on behalf of the UnitedStates Government, the following notice is applicable:U.S. GOVERNMENT RIGHTSThe U.S. Government’s rights to use, modify, reproduce, release, perform, display, or disclose these training materials are restrictedby the terms of the applicable Oracle license agreement and/or the applicable U.S. Government contract. Trademark Notice Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respectiveowners. Author  Craig McBride Technical Contributors and Reviewers  Avi Miller, Elena Zannoni, Lenz Grimmer, Sergio Leunissen, Waseem Daher, Wim Coekaerts, Al Flournoy, Harald Van Breederode, Joel Goodman, Manish Kapur, Soeren Binner, JeremySmyth, Yasar Akthar, Javier Saiz, Ozgur Yuksel, Antoinette O’Sullivan, Frank Allan, GavinBowe, Gino Kawalski, Jeff Suchomel, Rob Swank, Ron Hardin, Michele Dady, Matt Taylor  This book was published using:  Oracle Tutor   Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Oracle Linux System Administration Table of Contentsi Table of Contents Practices for Lesson 1: Course Introduction.................................................................................................1-1 Practices for Lesson 1....................................................................................................................................1-2Practice 1-1: Exploring the dom0 Environment..............................................................................................1-3Practice 1-2: Starting, Stopping, and Listing Guests......................................................................................1-9Practice 1-3: Connecting to a Guest VM........................................................................................................1-11Practice 1-4: Logging Off Your Student PC....................................................................................................1-15 Practices for Lesson 2: Introduction to Oracle Linux...................................................................................2-1 Practices for Lesson 2....................................................................................................................................2-2Practice 2-1: Quiz – Introduction to Oracle Linux...........................................................................................2-3Solution 2-1: Quiz – Introduction to Oracle Linux...........................................................................................2-5Practice 2-2: Viewing Kernel Information.......................................................................................................2-6Solution 2-2: Viewing Kernel Information.......................................................................................................2-7 Practices for Lesson 3: Installing Oracle Linux ............................................................................................3-1 Practices for Lesson 3....................................................................................................................................3-2Practice 3-1: Installing Oracle Linux...............................................................................................................3-3Practice 3-2: Using FirstBoot .........................................................................................................................3-37Practice 3-3: Logging In to Oracle Linux and Shutting Down.........................................................................3-44Practice 3-4: Post-Installation Tasks..............................................................................................................3-46 Practices for Lesson 4: Linux Boot Process.................................................................................................4-1 Practices for Lesson 4....................................................................................................................................4-2Practice 4-1: Exploring the GRUB Boot Loader.............................................................................................4-3Solution 4-1: Exploring the GRUB Boot Loader.............................................................................................4-8Practice 4-2: Booting Different Kernels..........................................................................................................4-16Solution 4-2: Booting Different Kernels..........................................................................................................4-17Practice 4-3: Using the GRUB Menu..............................................................................................................4-19Solution 4-3: Using the GRUB Menu..............................................................................................................4-20Practice 4-4: Changing the Default Runlevel .................................................................................................4-26Solution 4-4: Changing the Default Runlevel .................................................................................................4-27Practice 4-5: Exploring and Configuring init Services.....................................................................................4-30Solution 4-5: Exploring and Configuring init Services.....................................................................................4-32 Practices for Lesson 5: System Configuration..............................................................................................5-1 Practices for Lesson 5....................................................................................................................................5-2Practice 5-1: Exploring /etc/sysconfig ............................................................................................................5-3Solution 5-1: Exploring /etc/sysconfig ............................................................................................................5-5Practice 5-2: Exploring /proc..........................................................................................................................5-8Solution 5-2: Exploring /proc..........................................................................................................................5-9Practice 5-3: Exploring the sysfs File System................................................................................................5-12Solution 5-3: Exploring the sysfs File System................................................................................................5-13Practice 5-4: Using sysctl...............................................................................................................................5-15Solution 5-4: Using sysctl...............................................................................................................................5-16 Practices for Lesson 6: Package Management.............................................................................................6-1 Practices for Lesson 6....................................................................................................................................6-2Practice 6-1: Using the rpm Utility..................................................................................................................6-3Solution 6-1: Using the rpm Utility..................................................................................................................6-4Practice 6-2: Oracle Public Yum Server.........................................................................................................6-7Solution 6-2: Oracle Public Yum Server.........................................................................................................6-9  Copyright © 2012, Oracle and/or its affiliates. All rights reserved. Oracle Linux System Administration Table of ContentsiiPractice 6-3: Creating a Local yum Repository..............................................................................................6-13Solution 6-3: Creating a Local yum Repository..............................................................................................6-15Practice 6-4: Using the yum Utility.................................................................................................................6-18Solution 6-4: Using the yum Utility.................................................................................................................6-19Practice 6-5: Unbreakable Linux Network (ULN)............................................................................................6-23Solution 6-5: Unbreakable Linux Network (ULN)............................................................................................6-24 Practices for Lesson 7: Ksplice......................................................................................................................7-1 Practices for Lesson 7....................................................................................................................................7-2 Practices for Lesson 8: Automating Tasks....................................................................................................8-1 Practices for Lesson 8....................................................................................................................................8-2Practice 8-1: Automating Tasks.....................................................................................................................8-3Solution 8-1: Automating Tasks.....................................................................................................................8-5 Practices for Lesson 9: System Logging.......................................................................................................9-1 Practices for Lesson 9....................................................................................................................................9-2Practice 9-1: System Log File Configuration..................................................................................................9-3Solution 9-1: System Log File Configuration..................................................................................................9-5Practice 9-2: Using rsyslog Templates...........................................................................................................9-9Solution 9-2: Using rsyslog Templates...........................................................................................................9-10Practice 9-3: Using logwatch..........................................................................................................................9-12Solution 9-3: Using logwatch..........................................................................................................................9-13 Practices for Lesson 10: Kernel Module Configuration................................................................................10-1 Practices for Lesson 10..................................................................................................................................10-2Practice 10-1: Using Loadable Kernel Modules.............................................................................................10-3Solution 10-1: Using Loadable Kernel Modules.............................................................................................10-5 Practices for Lesson 11: User and Group Administration ...........................................................................11-1 Practices for Lesson 11..................................................................................................................................11-2Practice 11-1: User Account Administration...................................................................................................11-3Solution 11-1: User Account Administration...................................................................................................11-5Practice 11-2: Group Account Administration ................................................................................................11-14Solution 11-2: Group Account Administration ................................................................................................11-15Practice 11-3: User Private Groups................................................................................................................11-16Solution 11-3: User Private Groups................................................................................................................11-17Practice 11-4: Password Aging......................................................................................................................11-19Solution 11-4: Password Aging......................................................................................................................11-20Practice 11-5: Using the User Manager GUI..................................................................................................11-22Solution 11-5: Using the User Manager GUI..................................................................................................11-24 Practices for Lesson 12: Oracle Linux Filesystems......................................................................................12-1 Practices for Lesson 12..................................................................................................................................12-2Practice 12-1: Listing the Current Disk Partitions...........................................................................................12-3Solution 12-1: Listing the Current Disk Partitions...........................................................................................12-5Practice 12-2: Partitioning a Storage Device..................................................................................................12-8Solution 12-2: Partitioning a Storage Device..................................................................................................12-10Practice 12-3: Creating ext Filesystems.........................................................................................................12-14Solution 12-3: Creating ext Filesystems.........................................................................................................12-15Practice 12-4: Implementing Access Control Lists.........................................................................................12-18Solution 12-4: Implementing Access Control Lists.........................................................................................12-19Practice 12-5: Creating a btrfs Filesystem .....................................................................................................12-22Solution 12-5: Creating a btrfs Filesystem .....................................................................................................12-23
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