Trunk is now identical to Testing

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@4648 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

1 files changed, 36 insertions, 1 deletions

diff --git a/chapter06/creatingdirs.xml b/chapter06/creatingdirs.xml
index b989b7879..e7881c982 100644
--- a/chapter06/creatingdirs.xml
+++ b/chapter06/creatingdirs.xml
@@ -7,7 +7,9 @@
 <title>Creating Directories</title>
 <?dbhtml filename="creatingdirs.html"?>
 
-<para>Create a dirs tree:</para>
+<para>It is time to create some structure in the LFS file system.
+Create a directory tree. Issuing the following commands will create a
+standard tree:</para>
  
 <screen><userinput>install -d /{bin,boot,dev,etc/opt,home,lib,mnt}
 install -d /{sbin,srv,usr/local,var,opt}
@@ -29,4 +31,37 @@ install -d /var/{opt,cache,lib/{misc,locate},local}
 install -d /opt/{bin,doc,include,info}
 install -d /opt/{lib,man/man{1,2,3,4,5,6,7,8}}</userinput></screen>
 
+<para>Directories are, by default, created with permission mode 755,
+but this is not desirable for all directories. In the commands above,
+two changes are made&mdash;one to the home directory of user
+<emphasis>root</emphasis>, and another to the directories for
+temporary files.</para>
+
+<para>The first mode change ensures that not just anybody can enter
+the <filename class="directory">/root</filename> directory&mdash;the same
+as a normal user would do with his or her home directory. The second
+mode change makes sure that any user can write to the <filename
+class="directory">/tmp</filename> and <filename
+class="directory">/var/tmp</filename> directories, but cannot remove
+other users' files from them. The latter is prohibited by the
+so-called <quote>sticky bit,</quote> the highest bit (1) in the 1777
+bit mask.</para>
+
+<sect2>
+<title>FHS Compliance Note</title>
+
+<para>The directory tree is based on the Filesystem Hierarchy Standard
+(FHS) standard (available at <ulink
+url="http://www.pathname.com/fhs/"/>). Besides the tree created above,
+this standard stipulates the existence of <filename
+class="directory">/usr/local/games</filename> and <filename
+class="directory">/usr/share/games</filename>.  We do not recommend
+these for a base system, however, feel free to make the system
+FHS-compliant.  The FHS is not precise as to the structure of the
+<filename class="directory">/usr/local/share</filename> subdirectory,
+so we created only the directories that are needed.</para>
+
+</sect2>
+
 </sect1>
+