Hi. On Fri, Apr 03, 2020 at 08:52:33AM -0500, Martin McCormick wrote: > John Hasler <jhasler@newsguy.com> writes: > > look at screen. > > I use screen all the time and maybe I am missing > something but what you get with screen is a new shell in each > window, very useful but nothing to do with RS-232 ports. screen /dev/ttyS0 115200 But I prefer microcom from busybox for this: busybox microcom -s115200 /dev/ttyS0 Reco