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8 <sect1 id="pre-audience">
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11 <title>Audience</title>
13 <para>There are many reasons why you would want to read this book. One of the
14 questions many people raise is, <quote>why go through all the hassle of manually
15 building a Linux system from scratch when you can just download and install
16 an existing one?</quote></para>
18 <para>One important reason for this project's existence is to help you learn
19 how a Linux system works from the inside out. Building an LFS system helps
20 demonstrate what makes Linux tick, and how things work together and depend on
21 each other. One of the best things that this learning experience can provide is
22 the ability to customize a Linux system to suit your own unique needs.</para>
24 <para>Another key benefit of LFS is that it allows you to have more control
25 over the system without relying on someone else's Linux implementation. With
26 LFS, you are in the driver's seat and dictate every aspect of the
29 <para>LFS allows you to create very compact Linux systems. When installing
30 regular distributions, you are often forced to install a great many
31 programs which are probably never used or understood. These programs waste
32 resources. You may argue that with today's hard drive and CPUs, such
33 resources are no longer a consideration. Sometimes, however, you are still
34 constrained by size considerations if nothing else. Think about bootable
35 CDs, USB sticks, and embedded systems. Those are areas where LFS can be
38 <para>Another advantage of a custom built Linux system is security. By compiling
39 the entire system from source code, you are empowered to audit everything
40 and apply all the security patches desired. It is no longer necessary to
41 wait for somebody else to compile binary packages that fix a security hole.
42 Unless you examine the patch and implement it yourself, you have no
43 guarantee that the new binary package was built correctly and adequately
44 fixes the problem.</para>
46 <para>The goal of Linux From Scratch is to build a complete and usable
47 foundation-level system. If you do not wish to build your own Linux system
48 from scratch, you may not entirely benefit from the information in this
51 <para>There are too many other good reasons to build your own LFS system to
52 list them all here. In the end, education is by far the most powerful of
53 reasons. As you continue in your LFS experience, you will discover the power
54 that information and knowledge truly bring.</para>