<p>
<module>mod_sed</module> is an in-process content filter. The <module>mod_sed</module> filter implements the <code>sed</code> editing
commands implemented by the Solaris 10 <code>sed</code>
-program as described in the <a href="http://docs.sun.com/app/docs/doc/816-5165/sed-1b?a=view">manual
+program as described in the <a href="http://www.gnu.org/software/sed/manual/sed.txt">manual
page</a>. However, unlike <code>sed</code>, <module>mod_sed</module> doesn't take data from
standard
input. Instead, the filter acts on the entity data sent between client and
<p>A tutorial article on <module>mod_sed</module>, and why it is more powerful than simple
string or regular expression search and replace, is available <a
-href="http://blogs.sun.com/basant/entry/using_mod_sed_to_filter">on
+href="https://blogs.oracle.com/basant/entry/using_mod_sed_to_filter">on
the author's blog</a>.</p>
</summary>