Fedora + Ruby + Rails

• yum install httpd mysql-server mysql mysql-devel
  
• yum install ruby ruby-devel ruby-irb ruby-libs ruby-rdoc ruby-ri
• download gem and install from source
• gem install rails mongrel mechanize newgem
• gem install -y mysql -- --with-mysql-config=/usr/bin/mysql_config

Parse XML with ruby

Use Hpricot:

# @my_xml contains my xml in a String object

doc = Hpricot::XML(@my_xml)

Now you can do regular Hpricot to extract the xml content. E.g.(doc/"//entry/title/text()")