There isn't a specific command to do exactly that but we can cover some options.
- you probably don't want
knife node status, that rather misleadingly only applies to Push Jobs Clients
- instead you can use
knife status which will show the last checkin time of nodes
Chef doesn't have any awareness of whether machines are down or not, only that they haven't checked in in some time. You could filter based on that but there isn't anything inherent to find whether a node is not running.