source: chapter06/chroot.xml@ 26a89c5

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Last change on this file since 26a89c5 was 9b29852, checked in by Mark Hymers <markh@…>, 23 years ago

[Bug 228] Merge appendices A, B and D

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1<sect1 id="ch06-chroot">
2<title>Entering the chroot'ed environment</title>
3<?dbhtml filename="chroot.html" dir="chapter06"?>
4
5<para>It's time to enter our chroot'ed environment in order to install the
6rest of the software we need.</para>
7
8<para>Enter the following commands to enter the chroot'ed environment. From
9this point on there's no need to use the $LFS variable anymore, because
10everything a user does will be restricted to the LFS partition (since / is
11actually /mnt/lfs but the shell doesn't know that).</para>
12
13<para><screen>&c6-chrootcmd;</screen></para>
14
15<para>The -i option will clear all environment variables for as long as you
16are in the chroot'ed environment and only the HOME and TERM variables
17are set. The TERM=$TERM construction will set the TERM variable inside
18chroot to the same value as outside chroot which is needed for programs
19like vim and less to operate properly. If you need other variables
20present, such as CFLAGS or CXXFLAGS, you need to set them again.</para>
21
22<para>The reason we do <userinput>cd $LFS</userinput> before running the
23<userinput>chroot</userinput> command is that older sh-utils packages
24have a chroot program which doesn't do the cd by itself, therefore
25meaning that we have to perform it manually. While this isn't an issue
26with most modern distributions, it does no harm anyways and ensures that
27the command works for everyone.</para>
28
29<para>Now that we are inside a chroot'ed environment, we can continue to
30install all the basic system software. You have to make sure all the
31following commands in this and following chapters are run from within the
32chroot'ed environment. If you ever leave this environment for any reason
33(when rebooting for example) please remember to mount $LFS/proc
34again and re-enter chroot before continuing with the
35book.</para>
36
37<para>Note that the bash prompt will contain "I have no name!" This is
38normal because Glibc hasn't been installed yet.</para>
39
40&aa-chroot-dep;
41
42</sect1>
43
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