5525B/31/32 Line Matrix Printer User's Manual

Chapter 5 Configuring the Internal Ethernet Adapter for TCP/IP
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System V UNIX
Printing in a System V environment requires the use of an interface file.
It also consists of:
• the lp printer interface program
• the lpsched printing scheduler
• a set of programs acting as interfaces between the scheduler and
printing device.
The scheduler copies the files into a spooling directory and calls the
interface program when the job is ready to go the Internal Ethernet
Adapter. It processes the job according to the script’s setting and sends
it to the printer for printing.
The interface script is usually kept in /usr/spool/lp/admins/lp/
interfaces and carries the same name as the associated printer. It is
copied from the original interface file in /usr/spool/lp/model when the
lpadmin command is executed.
The interface script is called with the following syntax:
ps203 reqid username copies options file1 ...
where:
ps203 Name of the interface script which is also the printer name
on the host
requid Print job identification
username ID of the user requesting the job
title Title of the print job required
copies Number of copies for each file to be printed
options Additional switches for any extra job processing options
file1 spool file
... Indicates additional spool files