Ways to Run Multiple Backends with SSH Ability from Multiple Systems.

EDIT: My apologies. Not SSH. SH. Like sh scripts. Sorry if this is a bit too rudimentary. So, I am in a distributed systems class. For our final demo, we need four replicas running on four DIFFERENT machines. There are 4 of us in the group so the original plan was for all of us to meet on campus and connect via IP over the WiFi network. Unfortunately, one of us just had a family emergency and won't be able to join us tomorrow.