TAILIEUCHUNG - Networking: A Beginner’s Guide Fifth Edition- P69

Networking: A Beginner’s Guide Fifth Edition- P69:I have run into many people over the years who have gained good even impressive working knowledge of PCs, operating systems, applications, and common problems and solutions. Many of these people are wizards with desktop computers. | This page intentionally left blank Chapter 21 Introduction to Linux Systems Administration 323 324 Networking A Beginner s Guide When Linux first came out in 1991 you had to be either a systems administrator with a lot of time or a good hacker to be able to use the system effectively. While this was fine for folks who were willing to expend the effort it wasn t great for the vast majority who saw potential for using Linux but shied away from the learning curve. Thankfully many Linux distribution developers have realized this shortcoming and have gone to great lengths to make Linux not only easy to install but relatively painless to administer. This chapter provides an overview of some of the basic administrative chores necessary to keep a Linux server running smoothly. Although it is by no means a complete guide to systems administration this chapter will get you started in the right direction. This chapter assumes that you have Fedora Linux already installed and the graphical user interface X Window System configured. The chapter also assumes that you are logging in to the system and running all programs as the user root. CAUTION The root user is almighty under Linux. If you are familiar with Windows server you yCZx -- can think of root as being somewhat equivalent to the administrator account. With root access you have full control of the system including the ability to break it. If you are new to Linux you should definitely take some time to practice on a nonproduction system before trying things out on your system s users. This chapter is divided into two main sections. The first section deals with configuring Fedora Linux with graphical tools for systems administration functions. The second part of the chapter deals with the command-line interface. While this section isn t about systems administration per se the commands it covers are the foundation for basic systems administration tasks. Managing Fedora Linux with Graphical Tools The graphical tools are the .

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