In This Chapter
Using the root login
Administrative commands, configuration files and log files
Graphical administration tools
Working with the file system
Working with hardware devices
Monitoring system performance
Managing battery power on laptops
Using Security Enhanced Linux (SELinux)
Fedora and Red Hat Enterprise Linux, like other Linux and UNIX systems, were intended for use by more than one person at a time. Multiuser features allow many people to have accounts in Linux, with their data kept secure from others. Multitasking allows many people to use the computer at the same time. Sophisticated networking protocols and applications make it possible for a Linux system to extend its capabilities to network users and computers around the world. The person assigned to manage all of this stuff is referred to as the system administrator.
Even if you are the only person using a Linux system, system administration is still set up to be separate from other computer use. To do most administrative tasks, you need to be logged in as the root user (also referred to as the super user) or gain temporary root privileges. Other users cannot change, or in some cases, even see some of the configuration information for a Linux system. In particular, security features such as secure passwords are protected from general view.
This chapter describes the general principles of Fedora and RHEL system administration. In particular, this chapter covers some of the ...