I am not able to use 2 openerp on 1 server with different port also.

I have installed 2 openerp 6.1 and openerp 7.0 on ubuntu server following this steps http://www.theopensourcerer.com/2012/02/how-to-install-openerp-6-1-on-ubuntu-10-04-lts/ for openerp 6.1 and http://www.theopensourcerer.com/2012/12/how-to-install-openerp-7-0-on-ubuntu-12-04-lts/ for openerp 7.

Openerp 7.0 is running on port 8069 and openerp 6.1 is running on 8079.

Services of openerp 7 is automated and for 6.1 sudo su - openerp -s /bin/bash /opt/openerp/server/openerp-server i have to run manually than only it works and when i close by ssh client the services get stopped. After rebooting also only openerp 7 services get started.

Can anyone help me how should i make openerp 6.1 services also automated whenever the server is rebooted it should start.