source: clfs-sysroot/BOOK/final-preps/creatingdirs.xml @ 1f0a9c9

Last change on this file since 1f0a9c9 was 1f0a9c9, checked in by Jim Gifford <clfs@…>, 14 years ago

r3663@server (orig r1664): jciccone | 2006-05-26 17:16:29 -0700
Added glibc-ports to arm and made a few text changes

  • Property mode set to 100644
File size: 3.2 KB
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3  "" [
4  <!ENTITY % general-entities SYSTEM "../general.ent">
5  %general-entities;
8<sect1 id="ch-final-preps-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 ${LFS}/{bin,boot,etc/opt,home,lib,mnt,opt}
17mkdir -pv ${LFS}/{media/{floppy,cdrom},sbin,srv,var}
18install -dv -m 0750 ${LFS}/root
19install -dv -m 1777 ${LFS}/tmp ${LFS}/var/tmp
20mkdir -pv ${LFS}/usr/{,local/}{bin,include,lib,sbin,src}
21mkdir -pv ${LFS}/usr/{,local/}share/{doc,info,locale,man}
22mkdir -v  ${LFS}/usr/{,local/}share/{misc,terminfo,zoneinfo}
23mkdir -pv ${LFS}/usr/{,local/}share/man/man{1..8}
24for dir in ${LFS}/usr ${LFS}/usr/local; do
25  ln -sv share/{man,doc,info} $dir
27mkdir -v ${LFS}/var/{lock,log,mail,run,spool}
28mkdir -pv ${LFS}/var/{opt,cache,lib/{misc,locate},local}</userinput></screen>
30  <para>Directories are, by default, created with permission mode 755, but
31  this is not desirable for all directories. In the commands above, two
32  changes are made&mdash;one to the home directory of user <systemitem
33  class="username">root</systemitem>, and another to the directories for
34  temporary files.</para>
36  <para>The first mode change ensures that not just anybody can enter
37  the <filename class="directory">/root</filename> directory&mdash;the
38  same as a normal user would do with his or her home directory. The
39  second mode change makes sure that any user can write to the
40  <filename class="directory">/tmp</filename> and <filename
41  class="directory">/var/tmp</filename> directories, but cannot remove
42  another user's files from them. The latter is prohibited by the so-called
43  <quote>sticky bit,</quote> the highest bit (1) in the 1777 bit mask.</para>
45  <sect2>
46    <title>FHS Compliance Note</title>
48    <para>The directory tree is based on the Filesystem Hierarchy Standard (FHS)
49    (available at <ulink url=""/>). In addition to
50    the FHS, we create compatibility symlinks for the <filename
51    class="directory">man</filename>, <filename
52    class="directory">doc</filename>, and <filename
53    class="directory">info</filename> directories since many packages still try
54    to install their documentation into <filename
55    class="directory">/usr/&lt;directory&gt;</filename> or <filename
56    class="directory">/usr/local/&lt;directory&gt;</filename> as opposed to
57    <filename class="directory">/usr/share/&lt;directory&gt;</filename> or
58    <filename class="directory">/usr/local/share/&lt;directory&gt;</filename>.
59    The FHS also stipulates the existence of <filename
60    class="directory">/usr/local/games</filename> and <filename
61    class="directory">/usr/share/games</filename>. The FHS is not precise as to
62    the structure of the <filename class="directory">/usr/local/share</filename>
63    subdirectory, so we create only the directories that are needed. However,
64    feel free to create these directories if you prefer to conform more strictly
65    to the FHS.</para>
67  </sect2>
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