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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % general-entities SYSTEM "../general.ent">
%general-entities;
]>
<sect1 id="materials-introduction">
<?dbhtml filename="introduction.html"?>
<title>Introduction</title>
<para>This chapter includes a list of packages that need to be downloaded in
order to build a basic Linux system. The listed version numbers correspond to
versions of the software that are known to work, and this book is based on
their use. We highly recommend against using newer versions because the build
commands for one version may not work with a newer version. The newest package
versions may also have problems that require work-arounds. These work-arounds
will be developed and stabilized in the development version of the
book.</para>
<para>Download locations may not always be accessible. If a download
location has changed since this book was published, Google (<ulink
url="http://www.google.com/"/>) provides a useful search engine for
most packages. If this search is unsuccessful, try one of the
alternative means of downloading discussed at <ulink
url="&lfs-root;lfs/packages.html#packages"/>.</para>
<para>Downloaded packages and patches will need to be stored somewhere
that is conveniently available throughout the entire build. A working
directory is also required to unpack the sources and build them.
<filename class="directory">$LFS/sources</filename> can be used both
as the place to store the tarballs and patches and as a working
directory. By using this directory, the required elements will be
located on the LFS partition and will be available during all stages
of the building process.</para>
<para>To create this directory, execute the following command, as user
<systemitem class="username">root</systemitem>, before starting the download
session:</para>
<screen role="nodump"><userinput>mkdir -v $LFS/sources</userinput></screen>
<para>Make this directory writable and sticky. <quote>Sticky</quote>
means that even if multiple users have write permission on a
directory, only the owner of a file can delete the file within a
sticky directory. The following command will enable the write and
sticky modes:</para>
<screen role="nodump"><userinput>chmod -v a+wt $LFS/sources</userinput></screen>
<para>An easy way to download all of the packages and patches is by using
<ulink url="../wget-list">wget-list</ulink> as an input to
<command>wget</command>.</para>
</sect1>
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