The root user
Filesystems and mounts
Owners, Groups & permissions
Creating and managing users

The shell
Simple shell programming
System startup scripts
Run levels

Process management
Background process
cron and system crontabs

Connecting to the network
Network tools and utilities
Setting up email
Local services with inetd

Configuring X11 windows
Choosing a window manager
Customising the desktop

Installing new software
Using rpm

Configuring and building a new kernel
Kernel modules