Empezamos con la técnica

http://hackelare.wordpress.com/2009/06/25/instalar-xampp-xdebug-netbeans-en-ubuntu-guia-total/

http://xdebug.org/docs/install

http://docs.joomla.org/Setting_up_your_workstation_for_Joomla!_development#Install_Eclipse_Subversion