ITEM: CD4139L

virtual printers with print queues using a custom backend

ENV:
    AIX 4.1.4
    Unknown model

DESC:
    I have written my own custom print queue backend but I want the
    queued jobs to be sent through a virtual printer for formatting
    before sending to a printer.  Any ideas?
ACT:
   There are several ways to do this.  Here are two that seem to
   work well:

1) Create a file in the /dev/directory (eg /dev/lpx)
2) smit mkpq
     print to a file in the /dev/directory
       Use the name of the file created in step1
3) chvirprt -q yourq -d yourdevice -a mo=/your/program

Where "yourdevice" is the device created in step 1 and used in step2

Now jobs sent to this queue will be passed through the virtual printer
and the last thing that occurs is that the formatted data will be
piped as stdin into the program specified in the mo attribute.

Another way of doing this same thing, would be you make a backend
shell script like this:

\#!/bin/ksh
/usr/lib/lpd/piobe $* | /your/program

This way jobs queued will be formatted by piobe and then piped into
your program.



Support Line: virtual printers with print queues using a custom backend ITEM: CD4139L

Dated: August 1996 Category: N/A

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