This particular oneliner uses NOVA API to boot an image with the id=9876fa2-99df-4be3-989f-eec1e8c08afd and the flavor=general purpose 4GB RAM and the hint ensures that the server reaches the correct cell and hypervisor host.

supernova customer boot --image 9876fa2-99df-4be3-989f-eec1e8c08afd --flavor general1-4 --hint target_cell='lon!z0001' --hint 0z0ne_target_host=c-10-0-12-119 myservername