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43 lines
2.0 KiB
XML
43 lines
2.0 KiB
XML
<sect1 id="ch06-chroot">
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<title>Entering the chroot'ed environment</title>
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<?dbhtml filename="chroot.html" dir="chapter06"?>
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<para>It is time to enter the chroot'ed environment in order to begin installing
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the packages we need. Before you can chroot, however, you need to become
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<emphasis>root</emphasis>, since only <emphasis>root</emphasis>
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can execute the <userinput>chroot</userinput> command.</para>
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<para>Become <emphasis>root</emphasis> and run the following command
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to enter the chroot'ed environment:</para>
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<para><screen><userinput>chroot $LFS /static/bin/env -i \
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HOME=/root TERM=$TERM PS1='\u:\w\$ ' \
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PATH=/bin:/usr/bin:/sbin:/usr/sbin:/static/bin \
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/static/bin/bash --login</userinput></screen>
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</para>
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<para>The <userinput>-i</userinput> option given to the
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<userinput>env</userinput> command will clear all variables of the chroot'ed
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environment. After that, only the HOME, TERM, PS1 and PATH variables are
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set again. The TERM=$TERM construct will set the TERM variable inside chroot
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to the same value as outside chroot; this variable is needed for programs
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like vim and less to operate properly. If you need other variables present,
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such as CFLAGS or CXXFLAGS, this is a good place to set them again.</para>
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<para>From this point on there's no need anymore to use the $LFS variable,
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because everything you do will be restricted to the LFS file system -- since
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what the shell thinks is <filename class="directory">/</filename> is actually
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<filename class="directory">/mnt/lfs</filename>.</para>
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<para>You have to make sure all the commands in the rest of this chapter and
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in the following chapters are run from within the chroot'ed environment.
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If you ever leave this environment for any reason (rebooting for example),
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you must remember to again enter chroot and mount proc (discussed later)
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before continuing with the installations.</para>
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<para>Note that the bash prompt will say "I have no name!" This is
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normal, as the Glibc package hasn't been installed yet.</para>
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</sect1>
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