Cf. https://www.plctalk.net/qanda/showthread.php?t=129352
% ### Start server repeatedly in a loop
% while sleep 1 ; do python dominoserver.py || break ; end &
[1] <PID>
% ### Make a client calll
% python dominoclient.py 127.0.0.1 3 34 23-Jan-07 0374 11 16.38 605
% ### Stop server
% kill %1
Add printer response