A Practical Guide to Fedora™ and Red Hat® Enterprise Linux®, Seventh Edition

10. System Administration: Core Concepts

In This Chapter

Running Commands with root Privileges

Using su to Gain root Privileges

Using sudo to Gain root Privileges

The systemd init Daemon

Setting and Changing Runlevels

Configuring Daemons (Services)

Single-User Mode

Rescue an Installed System

X Window System

Textual Administration Utilities

SELinux

Setting Up a Server

Setting Up a chroot Jail

DHCP: Configures Network Interfaces

nsswitch.conf: Which Service to Look at First

Objectives

After reading this chapter you should be able to:

Explain the need for and the responsibility of a privileged user (root)

Gain root privileges using su and sudo ...