svn commit: r50252 - head/en_US.ISO8859-1/books/handbook/cutting-edge

[Warren Block]

Author: wblock
Date: Fri May 12 18:33:06 2017
New Revision: 50252
URL: https://svnweb.freebsd.org/changeset/doc/50252

Log:
  Show linking a custom kernel config file from another directory.

Modified:
  head/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.xml

Modified: head/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.xml
==============================================================================
--- head/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.xml	Fri May 12 17:30:55 2017	(r50251)
+++ head/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.xml	Fri May 12 18:33:06 2017	(r50252)
@@ -1398,15 +1398,26 @@ Working Copy Root Path: /usr/src
 	  <literal>amd64</literal>, giving a config file directory of
 	  <filename>/usr/src/sys/<replaceable>amd64</replaceable>/conf/</filename>.</para>
 
+	<tip>
+	  <para><filename>/usr/src</filename> can be deleted or
+	    recreated, so it is preferable to keep custom kernel
+	    config files in a separate directory, like
+	    <filename>/root</filename>. Link the kernel config file
+	    into the <filename>conf</filename> directory.  If that
+	    directory is deleted or overwritten, the kernel config
+	    can be re-linked into the new one.</para>
+	</tip>
+
 	<para>A custom config file can be created by copying the
 	  <filename>GENERIC</filename> config file.  In this example,
 	  the new custom kernel is for a storage server, so is named
 	  <filename>STORAGESERVER</filename>:</para>
 
-	<screen>&prompt.root; <userinput>cd /usr/src/sys/amd64/conf</userinput>
-&prompt.root; <userinput>cp GENERIC STORAGESERVER</userinput></screen>
+	<screen>&prompt.root; <userinput>cp /usr/src/sys/amd64/conf/GENERIC /root/STORAGESERVER</userinput>
+&prompt.root; <userinput>cd /usr/src/sys/amd64/conf</userinput>
+&prompt.root; <userinput>ln -s /root/STORAGESERVER .</userinput></screen>
 
-	<para><filename>STORAGESERVER</filename> is then edited,
+	<para><filename>/root/STORAGESERVER</filename> is then edited,
 	  adding or removing devices or options as shown in
 	  &man.config.5;.</para>