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<sect1 id="ch05-introduction">
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<title>Introduction</title>
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<para>
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In the following chapters we will install all the software that belongs to
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a basic Linux system. After a user is done with this chapter he has a
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fully working Linux system. The remaining chapters deal with setting up
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networking, creating the boot scripts and adding an entry to lilo.conf so
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that the LFS system can be booted.
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</para>
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<para>
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The software in this chapter will be linked statically. These programs
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will be re-installed in the next chapter and linked dynamically. The
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reason for the static version first is that there is a chance that our
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normal Linux system and the LFS system aren't using the same C
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Library versions. If the programs in the first part are linked against
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an older C library version, those programs might not work well on the
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LFS system.
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</para>
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<para>
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The key to learn what makes Linux tick is to know exactly what packages
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are used for and why a user or the system needs them. Descriptions
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of the package content are provided after the Installation subsection of each
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package and in Appendix A as well.
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</para>
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<para>
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We're about to start with installing the first set of packages. These
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packages will be, as previously explained, linked statically.
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</para>
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<para>
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During the installation of various packages the user will most likely see
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compiler warnings scrolling by on the screen. These are normal and can
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be safely ignored. They are just that, warnings (mostly about improper
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use of the C or C++ syntax, but not illegal use. It's just that often C
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standards changed and packages still use the old standard which is not a
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problem).
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</para>
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<para>
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Before we start, it should be made sure the LFS environment variable was
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setup
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if it was planned to be used, by running the following command:
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</para>
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<blockquote><literallayout>
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<userinput>echo $LFS</userinput>
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</literallayout></blockquote>
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</sect1>
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