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Unit 1: Essentials
Essential initial topics in system administration, including editors, switching accounts, adding users, using cron, and managing network connections
Unit 2: Kernel Services
The Linux kernel: variants and modules
The /proc filesystem and the sysctl command
Accessing devices using udev
Exploring hardware
Unit 3: Filesystem Management
Creating filesystems
Making filesystem mounts persistent across reboots
Managing swap space
Unit 4: User Administration
Modifying and deleting user accounts
Password aging
Group administration
Creating group directories
Setting disk quotas
Unit 5: Local Security
Setting up a host-based firewall
Using access control lists
The SELinux security layer
Managing suid and sgid executables
Controlling access to superuser authority using sudo
Unit 6: Advanced Partitioning
Understanding and implementing Software RAID
Understanding Logical Volume Management
Creating and resizing logical volumes
Unit 7: Installation
The interactive Anaconda installer
Kickstart: a hands-free method of installation
Unit 8: System Initialization
Understanding the boot procedure
Configuring the GRUB boot loader
The Initial RAM Disk
Understanding run levels
Controlling services
Unit 9: RPM, YUM, RHN
RPM: The Red Hat Package Manager
The YUM installer
Using the Red Hat Network
Unit 10: System Administration Topics
Configuring the X Server
The CUPS printing system
cron and the superuser: the system-wide crontab file
cron and system reboots: the anacron system
Authentication Configuration: Pluggable Authentication Modules
Unit 11: Network Configuration
Understanding network addresses
Using OpenSSH for network communications
Using VNC for network communications
Network Authentication
Unit 12: Network Security
Protecting services using TCP Wrappers
Protecting the system using a packet filtering host-based firewall
Unit 13: Network File Sharing Services
Setting up an NFS server
Setting up an FTP server
The Samba Server: networking with Windows systems
Unit 14: Network Infrastructure
Creating a private repository
NTP: Coordinating time
Configuring a DHCP server
Configuring a DNS server
Unit 15: HTTP Service
Configuring the Apache web server
Configuring the Squid web proxy cache
Unit 16: Mail Service
Understanding e-mail delivery
Using sendmail and postfix
Dovecot: an IMAP and POP server
Unit 17: Troubleshooting
A method for fault analysis
Things to check
Understanding recovery run levels
Using the rescue environment