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NAME
     dpd - data phone daemon

SYNOPSIS
     /etc/dpd

DESCRIPTION
     Dpd is the 201 data phone daemon.  It is designed to submit
     jobs to the Honeywell 6070 computer via the GRTS interface.

     Dpd uses the directory /usr/dpd.  The file lock in that
     directory is used to prevent two daemons from becoming
     active.  After the daemon has successfully set the lock, it
     forks and the main path exits, thus spawning the daemon.
     The directory is scanned for files beginning with df.  Each
     such file is submitted as a job.  Each line of a job file
     must begin with a key character to specify what to do with
     the remainder of the line.

       S  directs dpd to generate a unique snumb card.  This card
          is generated by incrementing the first word of the file
          /usr/dpd/snumb and converting that to three-digit octal
          concatenated with the station ID.

       L  specifies that the remainder of the line is to be sent
          as a literal.

       B  specifies that the rest of the line is a file name.
          That file is to be sent as binary cards.

       F  is the same as B except a form feed is prepended to the
          file.

       U  specifies that the rest of the line is a file name.
          After the job has been transmitted, the file is
          unlinked.

       M  is followed by a user ID; after the job is sent, the
          snumb number and the first line of information in the
          file is mailed to the user to verify the sending of the
          job.

     Any error encountered will cause the daemon to drop the
     call, wait up to 20 minutes and start over.  This means that
     an improperly constructed df file may cause the same job to
     be submitted every 20 minutes.

     While waiting, the daemon checks to see that the lock file
     still exists.  If it is gone, the daemon will exit.

FILES
     /dev/dn0, /dev/dp0, /usr/dpd/*

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SEE ALSO
     opr (I)

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