Directing output to local ports

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Directing output to local computer's ports

We're "finishing" a port from DOS/Windoze Clipper to Linux xHarbour
(xBase-to-C pre-processor).

One of the issues with the apps in this port involves running POS
workstations using ssh through a VPN tunnel to a remote server.
Everything works really well, except that we need to be able to send
output to local ports (ttyS* and/or lp*... soon, no doubt, to usb
ports as well) for customer display, coin changer, bill changer,
receipt printer, cash drawer (usually daisy-chained from receipt
printer), mag-stripe & smartcard encoder, electronic scale, etc.

Can anyone point me towards resources with examples... _simple_
examples for simple minds! ;)

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