source: chapter06/creatingdirs.xml@ 6bf3f58

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Last change on this file since 6bf3f58 was 6bf3f58, checked in by Bruce Dubbs <bdubbs@…>, 6 years ago

Reword FHS Compliance Note.
Update to perl-5.22.1.
Update to perl-5.22.1.
Update to linux-4.3.1.
Update to man-pages-4.03.
Fix xz problem identified upstream.

git-svn-id: 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "" [
4 <!ENTITY % general-entities SYSTEM "../general.ent">
5 %general-entities;
8<sect1 id="ch-system-creatingdirs">
9 <?dbhtml filename="creatingdirs.html"?>
11 <title>Creating Directories</title>
13 <para>It is time to create some structure in the LFS file system. Create a
14 standard directory tree by issuing the following commands:</para>
16<screen><userinput>mkdir -pv /{bin,boot,etc/{opt,sysconfig},home,lib/firmware,mnt,opt}
17mkdir -pv /{media/{floppy,cdrom},sbin,srv,var}
18install -dv -m 0750 /root
19install -dv -m 1777 /tmp /var/tmp
20mkdir -pv /usr/{,local/}{bin,include,lib,sbin,src}
21mkdir -pv /usr/{,local/}share/{color,dict,doc,info,locale,man}
22mkdir -v /usr/{,local/}share/{misc,terminfo,zoneinfo}
23mkdir -v /usr/libexec
24mkdir -pv /usr/{,local/}share/man/man{1..8}
26case $(uname -m) in
27 x86_64) ln -sv lib /lib64
28 ln -sv lib /usr/lib64
29 ln -sv lib /usr/local/lib64 ;;
32mkdir -v /var/{log,mail,spool}
33ln -sv /run /var/run
34ln -sv /run/lock /var/lock
35mkdir -pv /var/{opt,cache,lib/{color,misc,locate},local}</userinput></screen>
37 <para>Directories are, by default, created with permission mode 755, but
38 this is not desirable for all directories. In the commands above, two
39 changes are made&mdash;one to the home directory of user <systemitem
40 class="username">root</systemitem>, and another to the directories for
41 temporary files.</para>
43 <para>The first mode change ensures that not just anybody can enter
44 the <filename class="directory">/root</filename> directory&mdash;the
45 same as a normal user would do with his or her home directory. The
46 second mode change makes sure that any user can write to the
47 <filename class="directory">/tmp</filename> and <filename
48 class="directory">/var/tmp</filename> directories, but cannot remove
49 another user's files from them. The latter is prohibited by the so-called
50 <quote>sticky bit,</quote> the highest bit (1) in the 1777 bit mask.</para>
52 <sect2>
53 <title>FHS Compliance Note</title>
55 <para>The directory tree is based on the Filesystem Hierarchy Standard
56 (FHS) (available at <ulink
57 url=""/>). The FHS also stipulates
58 the optional existence some directories such as <filename
59 class="directory">/usr/local/games</filename> and <filename
60 class="directory">/usr/share/games</filename>. We create only the
61 directories that are needed. However, feel free to create these
62 directories. </para>
64 </sect2>
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