How to restart DevStack

Hi All, When I shutdown my PC, how to restart devstack. Is it ok to run ./stack.sh again or do I need to do it from the beginning? Thanks ! -- Regards, Manula Chathurika Thantriwatte phone : (+94) 772492511 email : manulachathurika@gmail.com Linkedin : *http://lk.linkedin.com/in/manulachathurika <http://lk.linkedin.com/in/manulachathurika>* blog : http://manulachathurika.blogspot.com/