• An Introduction to Linux and Open Source: what are the central ideas behind the Linux phenomenon and where do they come from?

Unit 2 - Linux Usage Basics

• Logging into the system, changing users and editing text files.

Unit 3 - Running Commands and Getting Help

• How to use built-in and online documentation to enhance your experience.
• https://help.ubuntu.com/community/UsingTheTerminal
• http://www.unixguide.net/linux/linuxshortcuts.shtml
• http://www.cyberciti.biz/faq/howto-unix-command-run-execute-bin-files-in-linux/

Unit 4 - Browsing the Filesystem

• Understanding the locations of important directories on a Red Hat Enterprise Linux system and navigating to them from the command line or with the graphical Nautilus browser.
• http://community.slickedit.com/index.php?topic=5644.0
• http://linuxfilesystem.com/uncategorized/rh033-red-hat-linux-essentials-unit-4-browsing-the-file-system-09mp4
• http://www.youtube.com/watch?v=hjSlGA5yT2E
• NTFS userspace support http://sourceforge.net/projects/linux-ntfs/files/

Unit 5 - Users, Groups and Permissions 

• Reading and setting permissions on files and directories.
• http://www.redhat.com/docs/manuals/linux/RHL-8.0-Manual/admin-primer/ch-acctsgrps.html
• http://www.freeos.com/articles/4440/
• http://www.freeos.com/articles/3127/
• http://www.webmasterworld.com/forum40/1555.htm
• http://www.linuxforums.org/articles/file-permissions_94.html
• http://www.zzee.com/solutions/linux-permissions.shtml
• http://en.wikipedia.org/wiki/Filesystem_permissions
• http://www.novell.com/support/search.do?cmd=displayKC&docType=kc&externalId=3944596&sliceId=1&docTypeID=DT_TID_1_1

Unit 6 - Using the bash Shell

• Basic tips and tricks to make the Red Hat Enterprise Linux default shell work for you. Topics include tab completion, history, and an introduction to shell scripting.
• http://www.hypexr.org/bash_tutorial.php
• http://linux.org.mt/article/terminal
• http://www.linux.org/docs/ldp/howto/Bash-Prog-Intro-HOWTO.html
• http://www.comptechdoc.org/os/linux/howlinuxworks/linux_hlbash.html
• http://en.wikipedia.org/wiki/Bash
• http://www.linuxjournal.com/article/2460
• http://tldp.org/LDP/abs/html/

Unit 7 - Standard I/O and Pipes

• The ins-and-outs of redirecting output between programs and files.
• http://linuxdevcenter.com/pub/a/linux/lpt/13_01.html
• http://www.linuxsa.org.au/tips/io-redirection.html

Unit 8 - Text Processing Tools

• An introduction to some of the most useful text-processing utilities in Red Hat Enterprise Linux, including grep, cut, sed, sort, diff, and patch.
• http://www.linux.org/lessons/advanced/x782.html
• http://www.linux.org/lessons/interm/c1337.html
• http://www.linux-mag.com/id/677
  

Unit 9 - vim: An Advanced Text Editor

• How to get the most out of the powerful and flexible vim text editor.

Unit 10 - Investigating and Managing Processes

• Listing, terminating and scheduling program executions on a Red Hat Enterprise Linux system.

Unit 11 - Basic System Configuration Tools

• Using Red Hat Enterprise Linux's graphical and text-based configuration tools to manage networking, printing and date/time settings.
• http://www.comptechdoc.org/os/linux/usersguide/linux_ugbasicnet.html
• 
  

Unit 12 - Finding and Processing Files

• In-depth coverage of using the find command and related utilities to locate and act upon files based on arbitrary criteria .
• http://www.unix.com/filesystems-disks-memory/27641-recursive-file-processing.html
• http://www.comptechdoc.org/os/linux/usersguide/linux_ugfinding.html
• http://content.hccfl.edu/pollock/unix/findcmd.htm
• http://linux.about.com/od/commands/l/blcmdl1_find.htm
• http://www.computerhope.com/unix/ufind.htm
• http://www.computerhope.com/issues/ch000623.htm
• http://www.linux.ie/newusers/beginners-linux-guide/find.php

Unit 13 - Network Clients

• An overview of network tools available in Red Hat Enterprise linux, from web browsers to email clients and diagnostic utilities.
• http://www.linuxjournal.com/article/2333
• http://www.aboutdebian.com/network.htm
• http://www.linux.org/docs/ldp/howto/Network-Install-HOWTO-7.html
• http://www.yolinux.com/TUTORIALS/LinuxTutorialMicrosoftWindowsNetworkIntegration.html
• http://nfs.sourceforge.net/
• http://tldp.org/guides.html

Unit 14 - Advanced Topics in Users, Groups and Permissions

• A deeper discussion of how user and group identities are stored on a Red Hat Enterprise Linux system, as well as the introduction of advanced filesystem permissions like SetUID and SetGID.
• http://www.linuxquestions.org/questions/linux-software-2/samba-user-group-access-permissions-different-between-linux-and-win-408642/
• http://en.wikipedia.org/wiki/Filesystem_permissions
• http://en.wikipedia.org/wiki/Setuid
• http://mambo-manual.org/display/conf/File+System+Permissions
• http://wiki.mandriva.com/en/Permissions
• http://www.comptechdoc.org/os/linux/usersguide/linux_ugfilesp.html
• http://evolt.org/node/263
• http://www.linux.org/docs/ldp/howto/Secure-Programs-HOWTO/minimize-privileges.html
• http://www.linux.org/docs/ldp/howto/Secure-Programs-HOWTO/files.html
• http://www.cpuug.org/index.php?topic=70.0

Unit 15 - The Linux Filesystem In-Depth

• The nuts-and-bolts of how Red Hat Enterprise Linux deals with filesystems. Topics include partitions, inodes, linking and archiving tools.
• http://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard
• http://tldp.org/LDP/Linux-Filesystem-Hierarchy/html/
• http://tldp.org/LDP/intro-linux/html/sect_03_01.html
• http://www.cyberciti.biz/tips/understanding-unixlinux-file-system-part-i.html
• http://www.ibm.com/developerworks/linux/library/l-linux-filesystem/
• http://www.linux.org/lessons/advanced/x1254.html
• http://www.oracle.com/technology/pub/articles/calish_filesys.html
• http://linuxfilesystem.com/

Unit 16 - Essential System Administration Tools

• An introduction to fundamental system administration topics such as installing Red Hat Enterprise Linux, managing software packages, and enhancing security with SELinux and the netfilter firewall.\
• http://www.slackbook.org/html/essential-sysadmin.html
• http://books.google.com/books?id=uRW8V9QOL7YC&pg=PT1177&lpg=PT1177&dq=linux+Essential+System+Administration+Tools&source=bl&ots=TBfrI0mAic&sig=j_glBX-TQuM5r3JTOM0RWUZOe4M&hl=en&ei=WhMKTNCKDsSwrAel4sCJDQ&sa=X&oi=book_result&ct=result&resnum=10&ved=0CEkQ6AEwCQ#v=onepage&q=linux%20Essential%20System%20Administration%20Tools&f=false
• http://download.cnet.com/Essential-System-Administration-Third-Edition/3000-2125_4-75023234.html
• http://www.zillr.org/ebook/essential-system-administration-3rd-edition.html
• http://www.webmin.com/
• http://librenix.com/?inode=1952
• http://www.yolinux.com/TUTORIALS/LinuxTutorialSysAdmin.html
• http://www.tlbox.com/system_administrators/
• http://www.cyberciti.biz/tips/top-linux-monitoring-tools.html
• http://www.topology.org/soft/admin.html

Unit 17 - So... What Now?

• Exposure to further options for training and involvement in the larger open-source community.
• http://www.theopensourcecommunity.com/
• http://www.opensourcecommunity.net/
• http://osflash.org/
• http://sourceforge.net/
• http://en.wikipedia.org/wiki/Free_software_community
• http://en.wikipedia.org/wiki/Open_source
• http://port25.technet.com/
  

Unit 1 - Administrative Access

• Configure and access various consoles directly, remotely with ssh, and with virt-manager.
• Configure privilege escalation with sudo.
• http://virt-manager.et.redhat.com/
• http://linux.die.net/man/1/virt-manager
• http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Virtualization-en-US/virt-install-wizard.html
• http://www.linux-kvm.com/content/using-bridged-networking-virt-manager
  

Unit 2 - Package Management

• Manage software on system using yum, Red Hat Network, and rpm.
• http://en.wikipedia.org/wiki/Up2date
• http://sial.org/howto/yum/
• http://myy.helia.fi/~karte/yum-package-manager.html
• http://www.redhat.com/docs/manuals/linux/RHL-7.2-Manual/custom-guide/ch-rpm.html
• http://www.cyberciti.biz/faq/yum-downloadonly-plugin/
• http://www.yolinux.com/TUTORIALS/LinuxTutorialSysAdmin.html

Unit 3 - System Services and Security

• Configure and manage system logging, time synchronization, printers, and task automation.
• Troubleshoot SELinux.
• http://www.yolinux.com/TUTORIALS/LinuxTutorialSysAdmin.html
• http://www.comptechdoc.org/os/linux/usersguide/linux_ugsysconfig.html
• http://librenix.com/?inode=10888
• http://www.linux.org/docs/ldp/howto/Kerberos-Infrastructure-HOWTO/time-sync.html
• http://www.linux.org/docs/ldp/howto/TimePrecision-HOWTO/ntp.html
• http://www.akadia.com/services/ntp_synchronize.html
• http://avi.alkalay.net/linux/docs/TimePrecision/TimePrecision.html
• http://www.vanemery.com/Linux/RH-Linux-Time.html
• http://www.linuxfoundation.org/collaborate/workgroups/openprinting
• http://www.linuxfoundation.org/collaborate/workgroups/openprinting/databasedatabaseintro
• http://www.openprinting.org/printers
• http://www.hp.com/wwsolutions/linux/products/printing_imaging/index.html
• http://tldp.org/HOWTO/SMB-HOWTO-9.html
• http://linux.about.com/od/itl_guide/a/gdeitl61.htm
• http://www.linux.org/docs/ldp/howto/Debian-and-Windows-Shared-Printing/sharing_with_windows.html
• http://www.linuxplanet.com/linuxplanet/tutorials/6598/1/
• http://www.linux.org/lessons/interm/c622.html
• http://kaybee.org:81/kirk/aua.html
• http://www.hiteksoftware.com/mize/automation-software-Linux.htm
• http://linux.about.com/od/lsa_guide/a/gdelsa83.htm
  

Unit 4 - System Initialization

• Define boot process, recover system, and manage service startup.
• http://en.wikipedia.org/wiki/Linux_startup_process
• http://www.ibm.com/developerworks/linux/library/l-linuxboot/
• http://www.sysresccd.org/Main_Page
• http://www.linuxcertified.com/linux-recovery.html
• http://www.yolinux.com/TUTORIALS/LinuxTutorialRecoveryAndBootDisk.html
• http://linux.die.net/man/8/fsck
• http://www.desktoplinux.com/news/NS4076782266.html
• http://www.linux.com/news/enterprise/storage/8257-how-to-recover-lost-files-after-you-accidentally-wipe-your-hard-drive
• http://www.cyberciti.biz/tips/repairing-linux-ext2-or-ext3-file-system.html
• http://www.diskinternals.com/
• http://www.ehow.com/how_2064953_recover-deleted-files-linux.html
• http://linuxhelp.blogspot.com/2006/04/enabling-and-disabling-services-during_01.html
• http://www.linux.com/archive/feature/114107
• http://www.fedorafaq.org/basics/
• http://theos.in/desktop-linux/removing-unwanted-startup-debian-files-or-services/
• http://www.cyberciti.biz/tips/how-to-controlling-access-to-linux-services.html
• http://www.marzocca.net/linux/bum.html
• http://www.debianhelp.co.uk/initscripts.htm
• http://www.mjmwired.net/resources/mjm-fedora-manage-services.html

Unit 5 - Kernel Monitoring and Configuration

• Explore kernel modules and variants, tune kernel parameters, manage devices, and monitor processes and resources.
• http://sourceforge.net/projects/lkmonitor/
• http://www.cyberciti.biz/tips/top-linux-monitoring-tools.html
• https://mon.wiki.kernel.org/index.php/Main_Page
• http://www.phoronix.com/scan.php?page=article&item=kernel_tracker_one_month&num=1
• http://linux.softpedia.com/get/System/Monitoring/Linux-Kernel-Monitor-8054.shtml
• http://www.kernel.org/pub/linux/kernel/people/marcelo/linux-2.4/Documentation/networking/bonding.txt
• http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html
• http://www.linuxjournal.com/article/6983
• http://www.linux.org/apps/all/Administration/Monitoring.html
• http://www.linuxtopia.org/online_books/linux_kernel/kernel_configuration/
• http://www.faqs.org/docs/Linux-HOWTO/Kernel-HOWTO.html
• http://math-www.uni-paderborn.de/~axel/config_help.html
• http://kernel.xc.net/
• http://www.kernel.org/pub/linux/kernel/people/gregkh/lkn/lkn_pdf/ch11.pdf
• http://linuxreviews.org/sysadmin/kernel-configuration/
• http://www.c3.hu/docs/oreilly/tcpip/tcpip/ch05_02.htm
• http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/custom-guide/s1-custom-kernel-modularized.html
• http://www.digitalhermit.com/linux/Kernel-Build-HOWTO.html
• http://www.gentoo.org/doc/en/kernel-config.xml
  

Unit 6 - Network Configuration

• Configure dynamic and static network settings for IPv4 and filter packets.
• http://www.yolinux.com/TUTORIALS/LinuxTutorialNetworking.html
• http://www.linuxheadquarters.com/howto/networking/networkconfig.shtml
• http://www.comptechdoc.org/os/linux/usersguide/linux_ugbasicnet.html
• http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch03_:_Linux_Networking
• http://openskill.info/topic.php?ID=194
• http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/custom-guide/ch-network-config.html
• http://www.aboutdebian.com/network.htm
• http://www.networkcomputing.com/unixworld/tutorial/013/013.part1.html
• http://www.debianhelp.co.uk/network.htm
• http://netfilter.org/documentation/HOWTO/packet-filtering-HOWTO.html
• http://www.netfilter.org/
• http://www.linuxjournal.com/article/4852
• http://www.linuxtopia.org/Linux_Firewall_iptables/index.html
• http://www.linuxjournal.com/article/5617
• http://l7-filter.sourceforge.net/
• IP Route 2 added by KN for reference. Useful for multiple wan links. Demanded by AUA.
• http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2

Unit 7 - Filesystem Administration

• Review filesystem management concepts, removable media and configure NFS shares with autofs.
• http://www.yolinux.com/TUTORIALS/LinuxTutorialSysAdmin.html
• http://www.freeos.com/articles/3102/
• http://oreilly.com/catalog/debian/chapter/book/ch07_02.html
• http://tldp.org/LDP/intro-linux/html/sect_03_01.html
• http://tldp.org/guides.html
• http://www.linuxjunkies.org/articles/file-system.html
• http://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard
• http://www.cyberciti.biz/tips/understanding-unixlinux-file-system-part-i.html
• http://www.debian-administration.org/articles/388
• http://www.linux.org/lessons/advanced/x1254.html
• http://en.wikipedia.org/wiki/Ext4
• https://ext4.wiki.kernel.org/index.php/Main_Page
• https://ext4.wiki.kernel.org/index.php/Ext4_Howto
• http://kernelnewbies.org/Ext4
• http://supermount-ng.sourceforge.net/
• http://blogs.techrepublic.com.com/10things/?p=457
• http://www.geek.com/forums/topic/linux-removable-media-support
• http://www.comptechdoc.org/os/linux/usersguide/linux_ugaccessmedia.html
• http://math.arizona.edu/~swig/documentation/disks/
• http://www.win.tue.nl/bcf/linux/usage/usb-fedora.php
• http://marc.herbert.free.fr/linux/win2linstall.html
• http://sourceforge.net/projects/submount/
• http://linux.die.net/man/1/eject
• http://www.packtpub.com/article/securely-encrypt-removable-media-with-ubuntu
• http://www.redhat.com/docs/manuals/linux/RHL-7.3-Manual/custom-guide/s1-nfs-mount.html
• http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/ref-guide/s1-nfs-client-config.html
• http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch29_:_Remote_Disk_Access_with_NFS
• http://baheyeldin.com/linux/setting-up-autofs-automount-for-a-linux-network.html
• http://www.linux-consulting.com/Amd_AutoFS/autofs-5.html
• https://help.ubuntu.com/community/SettingUpNFSHowTo
• http://www.greenfly.org/tips/autofs.html
• http://www.vanemery.com/Linux/NFS-Van.html
• http://wiki.archlinux.org/index.php/Autofs
• http://www.linuxquestions.org/questions/linux-server-73/ldap-nfs-autofs-for-centralized-storage-of-home-directories-789082/

Unit 8 - Additional Storage

• Expand storage by adding new filesystems and swap space.

Unit 9 - User Administration

• Create, modify and delete users, groups, and policy.
• Protect users and groups with quotas.

Unit 10 - Filesystems for Group Collaboration

• Establish collaborative group directories.
• Protect users and groups with ACLs.
• http://en.wikipedia.org/wiki/Filesystem_permissions
• http://www.vanemery.com/Linux/ACL/linux-acl.html
• http://www.sambaxp.org/uploads/media/05-Andreas-Gruenbacher_-_Linux_Samba_and_ACLs.pdf
• http://www.suse.de/~agruen/nfs4acl/
  

Unit 11 - Centralized User Administration

• Revisit user administration by connecting to network directory services like NIS and LDAP.
• http://www-uxsup.csx.cam.ac.uk/pub/doc/suse/suse9.3/suselinux-adminguide_en/cha.ldap.html
• http://www.symantec.com/connect/articles/active-directory-and-linux
• http://www.yolinux.com/TUTORIALS/LDAP_Authentication.html
  

Unit 12 - Software RAID

• Manage filesystems using Software RAID and recover an array.
• http://tldp.org/HOWTO/Software-RAID-HOWTO.html
• http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch26_:_Linux_Software_RAID
• http://ubuntuforums.org/showthread.php?t=408461

Unit 13 - Logical Volume Management

• Manage filesystems using Logical Volume Management.
• Resize filesystems and protect them with LVM Snapshots.
• http://www.walkernews.net/2007/07/11/create-new-linux-ext3-file-system-in-lvm/
• http://www.linuxconfig.org/Linux_lvm_-_Logical_Volume_Manager
• http://aplawrence.com/Linux/lvm.html
• http://tldp.org/HOWTO/LVM-HOWTO/
• http://www.felipe-alfaro.org/blog/2009/05/16/lvm-snapshots-and-non-destructive-linux-upgrades/
• http://wiki.archlinux.org/index.php/LVM

Unit 14 - Virtualization and Automated Installation

• Perform automated installations of Red Hat Enterprise Linux.
• Create para-virtualized user domains in Xen.
• http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/sysadmin-guide/ch-kickstart2.html
• http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Installation_Guide-en-US/pt-install-advanced-deployment.html
• http://en.wikipedia.org/wiki/Xen
• http://tx.downloads.xensource.com/downloads/docs/user/
• http://www.gloudemans.info/migrate-paravirtualized-xen-to-kvm-under-rhel/
• http://wiki.xensource.com/xenwiki/XenFaq
  

Unit 15 - Troubleshooting with Rescue Mode

• Explore troubleshooting methodologies.
• Utilize the rescue environment of anaconda.
• http://www.linux.com/archive/feed/60136
• http://www.lesbell.com.au/Home.nsf/b8ec57204f60dfcb4a2568c60014ed0f/1ae06dea8dd4367980256dd6004702ef
• http://www.nixtutor.com/linux/general-troubleshooting-in-linux/
• http://www.tutorialized.com/tutorials/Linux/Troubleshooting/1
• http://fedoraproject.org/wiki/Anaconda
• http://fedoraproject.org/wiki/Anaconda/Kickstart
• http://en.wikipedia.org/wiki/Anaconda_(installer)
• http://www.informit.com/articles/article.aspx?p=375539
• http://wiki.rpath.com/wiki/rPath_Linux:Installer_Customization/anaconda-custom