MSSH
mssh <hostclass> <command> [<args>] where hostclass can be "mortals" or "shellservers"
mssh is a custom UGCS command used to run a command on multiple machines at once. Its syntax is
Run "uptime" on all shellservers:
mssh shellserver uptime
Run "~/start_compute" on the mortals:
mssh mortals ~/start_compute
