Introduction
        Welcome to the Red Hat Linux Reference Guide.
      
        The Red Hat Linux Reference Guide contains useful information about
        the Red Hat Linux system. From fundamental concepts, such as the structure of
        the Red Hat Linux file system, to the finer points of system security and
        authentication control, we hope you will find this book to be a valuable
        resource.
      
        This guide is for you if you want to learn a bit more about how the
        Red Hat Linux system works. Topics that you can explore within this manual
        include the following:
      
1. Changes To This Manual
	This manual has been reorganized for clarity and updated for the latest
	features of Red Hat Linux 9. Some of the changes include:
      
- Updated The X Window System
	  Chapter
 The X Window System has been completely
	      revised and reorganized for clarity. New font configuration
	      instructions were added as well.
	    
- A New 
	      sysconfig Chapter
 The sysconfig section of the
	    Boot Process, Init, and Shutdown chapter has
	    been expanded and converted into its own chapter.
	    
- Updated TCP Wrappers and
	  xinetd Chapter
 The newly updated TCP Wrappers and
		xinetd chapter has been
		completely overhauled and reorganized for clarity.
- Updated Users and Groups Chapter
 The Users and Groups chapter has been
	      clarified, updated, and reorganized.
- Updated Network Interfaces
	    Chapter
 The Network Interfaces chapter has been
	    updated and reorganized.
- An Updated Apache HTTP Server
	Chapter
 The guide for migrating from version 1.3 to version 2.0 of the
	    Apache HTTP Server has been updated. The list of server configuration options
	    has been further updated and reorganized. Special thanks to
	    Gary Benson and Joe Orton
	    for their hard work on the Apache HTTP Server migration guide.
	    
	Before reading this guide, you should be familiar with the contents of
	the Red Hat Linux Installation Guide concerning installation issues, the
	Red Hat Linux Getting Started Guide for basic Linux concepts and the
	Red Hat Linux Customization Guide for general customization
	instructions. The Red Hat Linux Reference Guide contains information
	about topics for advanced users.
      
	HTML and PDF versions of all the Red Hat Linux manuals are available online at:
	http://www.redhat.com/docs
      
  | Note | 
|---|
|   | Although this manual reflects the most current
	information possible, you should read the Red Hat Linux Release
	Notes for information that may not have been available prior
	to our documentation being finalized. The Release
	Notes can be found on the Red Hat Linux CD #1 and online at
	the following URL:
	  |