note about removing hostname.old added

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1045 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/nettools-inst.xml

@@ -6,5 +6,10 @@
 <para><screen><userinput>make &amp;&amp;</userinput>
 <userinput>make install</userinput></screen></para>
 
+<para>Net-tools <userinput>hostname</userinput> replaces that which was
+originally installed by sh-utils.  Sometimes the sh-utils version gets
+left behind as /bin/hostname.old so you may wish to remove it by running 
+<userinput>rm -f /bin/hostname.old</userinput></para>
+
 </sect2>