posix4e@posix4e-P27GV2:~/projects/rumpctrl$  . ./rumpctrl.sh
rumpctrl (unix:///tmp/rumpctrlsock)$ sysctl -w kern.hostname=look_at_them_run
kern.hostname: rump-31153.posix4e-P27GV2 -> look_at_them_run
rumpctrl (unix:///tmp/rumpctrlsock)$ ls
ls: .: Function not implemented
rumpctrl (unix:///tmp/rumpctrlsock)$ ls -l
ls: .: Function not implemented
rumpctrl (unix:///tmp/rumpctrlsock)$