Added a separate file for the strippingagain section.

Tags correcitions.


git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3780 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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diff --git a/chapter06/strippingagain.xml b/chapter06/strippingagain.xml
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+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
+<sect1 id="ch-system-strippingagain">
+<title>Stripping again</title>
+<?dbhtml filename="strippingagain.html"?>
+
+<para>If you are not a programmer and don't plan to do any debugging on your
+system software, you can shrink your system by about 200 MB by removing the
+debugging symbols from binaries and libraries. This causes no inconvenience
+other than not being able to debug the software fully any more.</para>
+
+<para>Most people who use the command mentioned below don't experience any
+problems. But it is easy to make a typo and render your new system unusable, so
+before running the strip command it is probably a good idea to make a backup of
+the current situation.</para>
+
+<para>If you are going to perform the stripping, special care is needed to
+ensure you're not running any of the binaries that are about to be stripped.
+If you're not sure whether you entered chroot with the command given in
+<xref linkend="ch-system-chroot"/>, then first exit from chroot:</para>
+
+<screen><userinput>logout</userinput></screen>
+
+<para>Then reenter it with:</para>
+
+<screen><userinput>chroot $LFS /tools/bin/env -i \
+    HOME=/root TERM=$TERM PS1='\u:\w\$ ' \
+    PATH=/bin:/usr/bin:/sbin:/usr/sbin \
+    /tools/bin/bash --login</userinput></screen>
+
+<para>Now you can safely strip the binaries and libraries:</para>
+
+<screen><userinput>/tools/bin/find /{,usr/}{bin,lib,sbin} -type f \
+   -exec /tools/bin/strip --strip-debug '{}' ';'</userinput></screen>
+
+<para>A large number of files will be reported as having their file format not
+recognized. These warnings can be safely ignored, they just mean that those
+files are scripts instead of binaries, no harm is done.</para>
+
+<para>If you are really tight on disk space, you may want to use
+<parameter>--strip-all</parameter> on the binaries in
+<filename class="directory">/{,usr/}{bin,sbin}</filename> to gain several more megabytes. But do
+<emphasis>not</emphasis> use this option on libraries: they would be
+destroyed.</para>
+
+</sect1>
+