On 09/23/2010 03:32 PM, jkjones at tcq.net wrote: > I'm trying to debug some old equipment and the serial comm protocols it > uses.� Years ago I used to have a program which ran on a separate > computer in the serial link.� The program displayed all the characters > coming and going.� I don't remember any more than that, but it was > probably an MS-DOS program.� Is there anything equivalent now, for > Linux?� Some way to pass /dev/ttyS0 straight through to /dev/ttyS1 and > display the incoming and outgoing characters, perhaps?� Thanks. > > Kraig There are tons of apps out there for serial access, just google for "serial +linux" or so. This is especially hot in the embedded development. Myself, I use GNU screen to connect to my arm computer with a RS-232->USB converter since none of my computers have serial ports anymore. "screen /dev/ttyUSB0 115200" I'm sure the same applies for ttyS0. Hope that helps, Jeremy