Section 15.1 calls for mod_ruby installation. As of March 25, 2013, modruby.net is not functional and is owned by some unrelated party. The following adjustment works: Code: cd /tmp rm -fR /tmp/* wget http://fossies.org/unix/www/apache_httpd_modules/mod_ruby-1.3.0.tar.gz tar zxvf mod_ruby-1.3.0.tar.gz cd mod_ruby-1.3.0/ ./configure.rb --with-apr-includes=/usr/include/apr-1 make make install If you get a "permission denied" error installing from the tmp folder, copy the entire untarred folder to root directory, then run Code: chown -hR root:root mod_ruby-1.3.0 and you should be able to continue installation as normal.