.th DPD VIII 3/15/72.sh NAMEdpd \*- data phone daemon.sh SYNOPSIS.bd /etc/dpd.sh DESCRIPTION.it Dpdis the 201 data phone daemon.It is designed to submit jobs tothe Honeywell 6070 computer via the GRTSinterface..s3.it Dpduses the directory.it /usr/dpd.The file.it lockin that directoryis usedto prevent two daemons from becoming active.After the daemon has successfully set the lock,it forks and the main path exits, thusspawning the daemon.The directory is scanned for filesbeginning with.bd df.Each such file is submitted as a job.Each line of a job file must begin with a keycharacter to specify what to do with the remainderof the line..s3.lp +5 3\fBS\fR	directs.it dpdto generate a unique snumb card.This card is generated by incrementing the firstword of thefile.it /usr/dpd/snumband converting that to three-digit octal concatenated withthe station ID..s3.lp +5 3\fBL\fR	specifies that the remainder of the line is tobe sent as a literal..s3.lp +5 3\fBB\fR	specifies that the rest of the lineis a file name.That file is tobe sent as binary cards..s3.lp +5 3\fBF\fR	is the same as \fBB\fR except a form feed is prepended to the file..s3.lp +5 3\fBU\fR	specifies that the rest of the lineis a file name.After the job has been transmitted,the file is unlinked..s3.lp +5 3\fBM\fR	is followed by a user ID; after the job is sent,the snumb number and the first line of information in thefile is mailed to the userto verify the sending of the job..s3.i0Any error encountered will cause the daemon todrop the call, wait up to 20 minutes and start over.This means that an improperly constructed\fIdf\fR file may cause the same job to be submittedevery 20 minutes..s3While waiting, thedaemon checks tosee that the.it lockfile still exists.If it is gone,thedaemon will exit..sh FILES/dev/dn0,/dev/dp0,/usr/dpd/*.sh "SEE ALSO"opr (I)