1 files changed, 47 insertions, 2 deletions
diff --git a/chapter06/ed.xml b/chapter06/ed.xml
index e5a0c3100..078f0a45a 100644
--- a/chapter06/ed.xml
+++ b/chapter06/ed.xml
@@ -7,8 +7,53 @@ Estimated required disk space:  &ed-compsize;</screen>
 
 &aa-ed-shortdesc;
 &aa-ed-dep;
-&c6-ed-inst;
 
-</sect1>
+<sect2><title>&nbsp;</title><para>&nbsp;</para></sect2>
+
+<sect2>
+<title>Installation of Ed</title>
+
+<note><para>Ed isn't something which many people use. It's installed here
+because it can be used by the patch program if you encounter an ed-based patch
+file. This happens rarely because diff-based patches are preferred these
+days.</para></note>
+
+<para>Ed normally uses the mktemp function to create temporary files in
+<filename class="directory">/tmp</filename>, but this function contains a
+vulnerability (see the section on Temporary Files in <ulink
+url="http://en.tldp.org/HOWTO/Secure-Programs-HOWTO/avoid-race.html"/>). The
+following patch makes Ed use mkstemp instead, which is the recommended way to
+create temporary files.</para>
+
+<para>Apply the patch:</para>
+
+<screen><userinput>patch -Np1 -i ../&ed-patch;</userinput></screen>
+
+<para>Now prepare Ed for compilation:</para>
+
+<screen><userinput>./configure --prefix=/usr</userinput></screen>
+
+<para>Compile the package:</para>
 
+<screen><userinput>make</userinput></screen>
+
+<para>This package has a test suite available which can perform a number of
+checks to ensure it built correctly.  Should you choose to run it, the 
+following command will do so:</para>
+
+<screen><userinput>make check</userinput></screen>
+
+<para>Install the package:</para>
+
+<screen><userinput>make install</userinput></screen>
+
+<para>And move the programs to the <filename>/bin</filename> directory, so
+they can be used in the event that the <filename>/usr</filename> partition is
+unavailable.</para>
+
+<screen><userinput>mv /usr/bin/{ed,red} /bin</userinput></screen>
+
+</sect2>
+
+</sect1>