You need documentation that is appropriate to your level of Linux expertise. Otherwise, you might feel overwhelmed or may not find the necessary information to answer any questions. The Red Hat Enterprise Linux Reference Guide deals with the more technical aspects and options of a Red Hat Enterprise Linux system. This section helps you decide whether to look in this manual for the information you need or consider other Red Hat Enterprise Linux manuals, including online sources, in your search.
Three different categories of people use Red Hat Enterprise Linux, and each of these categories require different sets of documentation and informative sources. To help you figure out where you should start, determine your own experience level:
This type of user has never used any Linux (or Linux-like) operating system before or has had only limited exposure to Linux. They may or may not have experience using other operating systems (such as Windows). Is this you? If so, skip ahead to Section 2.1 Documentation For First-Time Linux Users.
This type of user has installed and successfully used Linux (but not Red Hat Enterprise Linux) before or may have equivalent experience with other Linux-like operating systems. Does this describe you? If so, turn to Section 2.2 For the More Experienced.
This type of user has installed and successfully used Red Hat Enterprise Linux before. If this describes you, turn to Section 2.3 Documentation for Linux Gurus.
For someone new to Linux, the amount of information available on any particular subject, such as printing, starting up the system or partitioning a hard drive, can be overwhelming. It helps to initially step back and gain a decent base of information centered around how Linux works before tackling these kinds of advanced issues.
Your first goal should be to obtain some useful documentation. This cannot be stressed enough. Without documentation, you only become frustrated at your inability to get a Red Hat Enterprise Linux system working the way you want.
You should acquire the following types of Linux documentation:
A brief history of Linux — Many aspects of Linux are the way they are because of historical precedent. The Linux culture is also based on past events, needs or requirements. A basic understanding of the history of Linux help you figure out how to solve many potential problems before you actually see them.
An explanation of how Linux works — While delving into the most arcane aspects of the Linux kernel is not necessary, it is a good idea to know something about how Linux is put together. This is particularly important if you have been working with other operating systems, as some of the assumptions you currently hold about how computers work may not transfer from that operating system to Linux.
An introductory command overview (with examples) — This is probably the most important thing to look for in Linux documentation. The underlying design philosophy for Linux is that it is better to use many small commands connected together in different ways than it is to have a few large (and complex) commands that do the whole job themselves. Without examples that illustrate this approach to doing things, you may find yourself intimidated by the sheer number of commands available on a Red Hat Enterprise Linux system.
Keep in mind that you do not have to memorize all of the available Linux commands. Different techniques exist to help you find the specific command you need to accomplish a task. You only need to know the general way in which Linux functions, what you need to accomplish, and how to access the tool that give you the exact instructions you need to execute the command.
The Red Hat Enterprise Linux Installation Guide is a excellent reference for helping you get a Red Hat Enterprise Linux system successfully installed and initially configured. The Red Hat Enterprise Linux Introduction to System Administration is an excellent place to start for those learning the basics of system administration. You should start with these two books and use them to build the base of your knowledge of Red Hat Enterprise Linux. Before long, more complicated concepts begin to make sense because you already grasp the general ideas.
Beyond reading Red Hat Enterprise Linux manuals, several other excellent documentation resources are available for little or no cost:
http://www.redhat.com/ — On the Red Hat website, you find links to the Linux Documentation Project (LDP), online versions of the Red Hat Enterprise Linux manuals, FAQs (Frequently Asked Questions), a database which can help you find a Linux Users Group near you, technical information in the Red Hat Support Knowledge Base, and more.
http://www.linuxheadquarters.com/ — The Linux Headquarters website features easy to follow, step-by-step guides for a variety of Linux tasks.
You can participate in newsgroups by watching the discussions of others attempting to solve problems, or by actively asking or answering questions. Experienced Linux users are known to be extremely helpful when trying to assist new users with various Linux issues — especially if you are posing questions in the right venue. If you do not have access to a news reader application, you can access this information via the Web at http://groups.google.com/. Dozens of Linux-related newsgroups exist, including the following:
linux.help — A great place to get help from fellow Linux users.
linux.redhat — This newsgroup primarily covers Red Hat Enterprise Linux-specific issues.
linux.redhat.install — Pose installation questions to this newsgroup or search it to see how others solved similar problems.
linux.redhat.misc — Questions or requests for help that do not really fit into traditional categories go here.
linux.redhat.rpm — A good place to go if you are having trouble using RPM to accomplish particular objectives.
Red Hat Linux for Dummies, 2nd Edition by Jon "maddog" Hall; IDG
Special Edition Using Red Hat Linux by Alan Simpson, John Ray and Neal Jamison; Que
Running Linux by Matt Welsh and Lar Kaufman; O'Reilly & Associates
Red Hat Linux 9 Unleashed by Bill Ball and Hoyle Duff; Pearson Education
The books suggested here are excellent primary sources of information for basic knowledge about a Red Hat Enterprise Linux system. For more in-depth information concerning the various topics discussed throughout this book, many of the chapters list specific book titles, usually in an Additional Resources area.
One excellent resource for aspiring system administrators is the Red Hat Enterprise Linux Introduction to System Administration. This book is designed to explain strategies for administering Red Hat Enterprise Linux and is an excellent place to start for those learning the basics of system administration.
If you have used other Linux distributions, you probably already have a basic grasp of the most frequently used commands. You may have installed your own Linux system, and maybe you have even downloaded and built software you found on the Internet. After installing Linux, however, configuration issues can be very confusing.
The Red Hat Enterprise Linux System Administration Guide is designed to help explain the various ways a Red Hat Enterprise Linux system can be configured to meet specific objectives. Use this manual to learn about specific configuration options and how to put them into effect.
When you are installing software that is not covered in the Red Hat Enterprise Linux System Administration Guide, it is often helpful to see what other people in similar circumstances have done. HOWTO documents from the Linux Documentation Project, available at http://www.redhat.com/mirrors/LDP/HOWTO/HOWTO-INDEX/howtos.html, document particular aspects of Linux, from low-level kernel esoteric changes to using Linux for amateur radio station work.
If you are concerned about security issues, the Red Hat Enterprise Linux Security Guide is a great resource — explaining in concise terms best strategies and practices for securing Red Hat Enterprise Linux.
If you are a long-time Red Hat Enterprise Linux user, you probably already know that one of the best ways to understand a particular program is to read its source code and/or configuration files. A major advantage of Red Hat Enterprise Linux is the availability of the source code for anyone to read.
Obviously, not everyone is a programmer, so the source code may not be helpful for you. However, if you have the knowledge and skills necessary to read it, the source code holds all of the answers.