daemon.mn(M)                    19 June 1992                    daemon.mn(M)


 Name

    daemon.mn - micnet mailer daemon

 Syntax

    /usr/lib/mail/daemon.mn [ -ex ]

 Description

    The mailer daemon performs the ``backend'' networking functions of the
    mail, rcp, and remote commands by establishing and servicing the serial
    communication link between computers in a Micnet network.

    When invoked, the daemon creates multiple copies of itself, one copy for
    each serial line used in the network.  Each copy opens the serial line,
    creates a startup message for the LOG file, and waits for a response from
    the daemon at the other end. The startup message lists the names of the
    machines to be connected, the serial line to be used, and the current
    date and time.  If the daemon receives a correct response, it establishes
    the serial link and adds the message ``first handshake complete'' to the
    LOG file.  If there is no response, the daemon waits indefinitely.

    If invoked with the -x switch, the daemon records each transmission in
    the LOG file.  A transmission entry shows the direction of the transmis-
    sion (tx for transmit, rx for receive), the number of bytes transmitted,
    the elapsed time for the transmission (in minutes and seconds), and the
    time of day of the transmission (in hours, minutes, and seconds).  Each
    entry has the form:

       direction  byte_count  elapsed_time  time_of_day

    The daemon also records the date and time every hour.  The date and time
    have the same format as described for the date command.

    If invoked with the -e switch, the daemon records all transmission errors
    in the LOG file.  An error entry shows the cause of the error preceded by
    the name of the daemon subroutine which detected the error.

    The mailer daemon is normally invoked by the start option of the netutil
    command and is stopped by the stop option.

    During the normal course of execution, the mailer daemon uses several
    files in the /usr/spool/micnet/remote directory.  These files provide
    storage for LOG entries, commands issued by the remote(C) command, and a
    list of processes under daemon control.

 Files

    /usr/lib/mail/daemon.mn
    /usr/spool/micnet/remote/*/LOG
    /usr/spool/micnet/remote/*/mn
    /usr/spool/micnet/remote/local/mn*
    /usr/spool/micnet/remote/lock
    /usr/spool/micnet/remote/pids

 See also

    netutil(ADM)

 Value added

    daemon.mn is an extension of AT&T System V provided by The Santa Cruz
    Operation, Inc.