gtkterm accepts the following options:
-h,--help Help screen.
-c,--config<configuration>
Load configuration (default is "default").
-p,--port<device>
Serial port device (default /dev/ttyS0).
-s,--speed<speed>
Serial port speed (default 115200).
-b,--bits<bits>
Number of bits (default 8).
-t,--stopbits<stopbits>
Number of stopbits (default 1).
-a,--parity<odd|even>
Partity (default none).
-w,--flow<Xon|CTS>
Flow control (default none).
-d,--delay<ms>
End of line delay in ms (default none).
-r,--char<char>
Wait for a special char at end of line (default none).
-f,--file<filename>
Default file to send (default none).
-e,--echo
Set local echo.
-x,--rts_time_before<ms>
For rs485, time in ms before transmit with rts on
-y,--rts_time_after<ms>
For rs485, time in ms after transmit with rts on
-e,--echo
Switch on local echo
-L,--disable-port-lock
Do not lock serial port. Allows to send to serial port from different terminals.