source: prologue/audience.xml@ 799ef8f

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Last change on this file since 799ef8f was e431af69, checked in by Manuel Canales Esparcia <manuel@…>, 20 years ago

Text dropped in prologue.
Added appendix{a,b}.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@4426 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
3 <!ENTITY % general-entities SYSTEM "../general.ent">
4 %general-entities;
5]>
6<sect1 id="pre-audience">
7<title>Audience</title>
8<?dbhtml filename="audience.html"?>
9
10<para>See testing</para>
11
12<!--
13<sect2>
14<title>Who would want to read this book</title>
15
16<para>There are many reasons why somebody would want to read this book. The
17principal reason being to install a Linux system straight from the source
18code. A question many people raise is <quote>Why go through all the hassle of
19manually building a Linux system from scratch when you can just download and
20install an existing one?</quote>. That is a good question and is the impetus for
21this section of the book.</para>
22
23<para>One important reason for LFS's existence is to help people learn how a
24Linux system works from the inside out. Building an LFS system helps demonstrate
25to you what makes Linux tick, how things work together and depend on each
26other. One of the best things that this learning experience provides is the
27ability to customize Linux to your own tastes and needs.</para>
28
29<para>A key benefit of LFS is that you have more control of your system
30without relying on someone else's Linux implementation. With LFS, you are
31in the driver's seat and dictate every aspect of your system, such as the
32directory layout and bootscript setup. You also dictate where, why and how
33programs are installed.</para>
34
35<para>Another benefit of LFS is the ability to create a very compact Linux
36system. When installing a regular distribution, you are usually forced to
37install several programs which you are likely never to use. They're just
38sitting there wasting precious disk space (or worse, CPU cycles). It isn't
39difficult to build an LFS system of less than 100 MB. Does that still sound like a
40lot? A few of us have been working on creating a very small embedded LFS
41system. We successfully built a system that was just enough to run the Apache
42web server with approximately 8MB of disk space used. Further stripping could
43bring that down to 5 MB or less. Try that with a regular distribution.</para>
44
45<para>We could compare Linux distributions to a hamburger you buy at a
46fast-food restaurant - you have no idea what you are eating. LFS, on the
47other hand, doesn't give you a hamburger, but the recipe to make a hamburger.
48This allows you to review it, to omit unwanted ingredients, and to
49add your own ingredients which enhance the flavor of your burger. When you
50are satisfied with the recipe, you go on to preparing it. You make it just
51the way you like it: broil it, bake it, deep-fry it, barbecue it, or eat it
52tar-tar (raw).</para>
53
54<para>Another analogy that we can use is that of comparing LFS with a
55finished house. LFS will give you the skeletal plan of a house, but it's up
56to you to build it. You have the freedom to adjust your plans as you
57go.</para>
58
59<para>One last advantage of a custom built Linux system is security.
60By compiling the entire system from source code, you are empowered to audit
61everything and apply all the security patches you feel are needed. You don't
62have to wait for somebody else to compile binary packages that fix a security
63hole. Unless you examine the patch and implement it yourself you have no
64guarantee that the new binary package was built correctly and actually fixes the
65problem (adequately).</para>
66
67<para>There are too many good reasons to build your own LFS system for them all
68to be listed here. This section is only the tip of the iceberg. As you
69continue in your LFS experience, you will find on your own the power that
70information and knowledge truly bring.</para>
71
72</sect2>
73
74<sect2>
75<title>Who would not want to read this book</title>
76
77<para>There are probably some who, for whatever reason, would feel that they do not
78want to read this book. If you do not wish to build your own Linux system from
79scratch, then you probably don't want to read this book. Our goal is to help
80you build a complete and usable foundation-level system. If you only want to
81know what happens while your computer boots, then we recommend the <quote>From
82Power Up To Bash Prompt</quote> HOWTO. The HOWTO builds a bare system which is
83similar to that of this book, but it focuses strictly on creating a system
84capable of booting to a BASH prompt.</para>
85
86<para>While you decide which to read, consider your objective. If you wish
87to build a Linux system while learning a bit along the way, then this book
88is probably your best choice. If your objective is strictly educational and
89you do not have any plans for your finished system, then the
90<quote>From Power Up To Bash Prompt</quote> HOWTO is probably a better choice.</para>
91
92<para>The <quote>From Power Up To Bash Prompt</quote> HOWTO is located at
93<ulink url="http://axiom.anu.edu.au/~okeefe/p2b/"/> or on The Linux
94Documentation Project's website at
95<ulink url="http://www.tldp.org/HOWTO/From-PowerUp-To-Bash-Prompt-HOWTO.html"/>.</para>
96
97</sect2>
98-->
99
100</sect1>
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