chapter06: Translate create directories instruction

chapter06/creatingdirs.xml

@@ -8,10 +8,12 @@
 <sect1 id="ch-system-creatingdirs">
   <?dbhtml filename="creatingdirs.html"?>
 
-  <title>Creating Directories</title>
+  <title>创建目录</title>
 
-  <para>It is time to create some structure in the LFS file system. Create a
-  standard directory tree by issuing the following commands:</para>
+  <!--para>It is time to create some structure in the LFS file system. Create a
+  standard directory tree by issuing the following commands:</para-->
+  <para>现在需要在 LFS 文件系统中创建一些目录结构。
+	  执行下列命令，创建一棵标准目录树：</para>
 
 <screen><userinput>mkdir -pv /{bin,boot,etc/{opt,sysconfig},home,lib/firmware,mnt,opt}
 mkdir -pv /{media/{floppy,cdrom},sbin,srv,var}
@@ -32,32 +34,51 @@ ln -sv /run /var/run
 ln -sv /run/lock /var/lock
 mkdir -pv /var/{opt,cache,lib/{color,misc,locate},local}</userinput></screen>
 
-  <para>Directories are, by default, created with permission mode 755, but
+  <!--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 <systemitem
   class="username">root</systemitem>, and another to the directories for
-  temporary files.</para>
+  temporary files.</para-->
+  <para>默认情况下，新创建的目录具有权限位 755 ，但这并不适合所有目录。
+	  在以上命令中，两个目录的权限位被修改 —— 一个是 <systemitem
+		  class="username">root</systemitem> 的主目录，
+	  另一个是包含临时文件的目录。</para>
 
-  <para>The first mode change ensures that not just anybody can enter
+  <!--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
   another user's 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>
+  <quote>sticky bit,</quote> the highest bit (1) in the 1777 bit mask.</para-->
+  <para>第一个修改能保证不是所有人都能进入
+	  <filename class="directory">/root</filename> ——
+	  一般用户也会为他/她的主目录设置同样的 0750 权限位。
+	  第二个修改保证任何用户都可写入
+	  <filename class="directory">/tmp</filename> 和
+	  <filename class="directory">/var/tmp</filename> 目录，
+	  但不能从中删除其他用户的文件，因为所谓的 <quote>粘滞位</quote>
+	  (sticky bit)，即 1777 位掩码的最高位 (1) 阻止这样做。</para>
 
   <sect2>
-    <title>FHS Compliance Note</title>
+    <title>FHS 兼容性注记</title>
 
-    <para>The directory tree is based on the Filesystem Hierarchy Standard
+    <!--para>The directory tree is based on the Filesystem Hierarchy Standard
     (FHS) (available at <ulink
     url="https://wiki.linuxfoundation.org/en/FHS"/>).  The FHS also specifies
     the optional existence of some directories such as <filename
     class="directory">/usr/local/games</filename> and <filename
     class="directory">/usr/share/games</filename>.  We create only the
     directories that are needed. However, feel free to create these
-    directories.  </para>
+    directories.  </para-->
+    <para>这个目录树是基于 Filesystem Hierarchy Standard (FHS)
+		（可以在 <ulink url="https://wiki.linuxfoundation.org/en/FHS"/>
+		查阅）建立的。 FHS 标准还规定了某些可选的目录，
+		例如 <filename class="directory">/usr/local/games</filename>
+		和 <filename class="directory">/usr/share/games</filename>。
+		我们只创建了必要的目录，如果您需要的话可以自己创建可选这些可选目录。
+	</para>
 
   </sect2>