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The snooper is a serial line snooping tool used for snooping communication
between two devices that communicate with an RS232C serial line.

An typical machine configuration involving three computers is:

        partyA      a computer 
        partyB      computer/modem/digi-cam/whatever
        console     The computer you are using to snoop
                the communication between A and B.

    Say, you would like to snoop the following configuration.
        partyA ---cableAB--- partyB
    In that case you should connect "console" between partyA and
    cableAB, as follows:
        partyA ---cableX--- console ---cableAB--- party B
    cableX must be cross-cable (a cable to connect two computers).

Command-line options
    % snooper [-options] dev0 dev1
        -bBAUD  specifies baud rate.
        -u  don't use uucp locking (questionable option)
        dev0    name of serial device 0.
        dev1    name of serial device 1.