etc/cron.d/openerp_lhc_demo-restore

   1 # m h dom mon dow user command
   2 0 2 * * * postgres sv stop openerp_lhc_demo && dropdb -U postgres openerp_lhc_demo && createdb -U postgres -O openerp_lhc_demo -T openerp_lhc_demo_bak openerp_lhc_demo && sv start openerp_lhc_demo