I was reading on a website and there they talked about kissutil from Direwolf. This appears to be a tool you use interactively for troubleshooting a kiss tnc or you can use it as an application interface. Very nice tool.
kissutil can be used interactively for troubleshooting a KISS TNC. It is usable with direwolf and other generic KISS TNCs connected to a serial port. It can also be used as an application interface where each side places files in a directory for the other to process. Options -h host Hostname or IP address for a TCP KISS TNC. Default is localhost. -p port A number may be specified for a TCP port other than the default 8001. If not a number, it is considered to be a serial port name such as /dev/ttyS0 or COM3. -s speed Speed for serial port. e.g. 9600. -o rec-directory For each received frame, a new file is created here. It is expected that some other application will process files in this directory then delete them. -T format Each received frame will be preceded by a timestamp in the specified format. See strftime documentation for a description of the format string. Example: %H:%M:%S for current time in hours, minutes, seconds. -f xmit-directory Files in this directory are transmited and deleted. Another application places a file here when it wants something to be transmitted. -v Verbose - Display the KISS frames going to and from the TNC.
In the User-guide-1.6-pre you can find somemore info on section 14.6