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From: ooms@delgeo.UUCP (Frank Ooms)
Newsgroups: comp.unix.internals
Subject: Re: LPD with multiple queues to one device
Message-ID: <1875@delgeo.UUCP>
Date: 1 Nov 90 07:32:51 GMT
References: <24906@adm.BRL.MIL>
Reply-To: ooms@delgeo.UUCP (Frank Ooms)
Organization: Delft Geophysical b.v.
Lines: 32

In article <24906@adm.BRL.MIL> dave@sam.cs.olemiss.edu writes:
>
> [stuff deleted]
>
>Having two queues pointing to the same device will not
>work (I dont think) because output may be mixed since each daemon does
>not know of the other one.
>

we do this with bsd lpd(8) using two (or more queues) to the same
device. The output of each printjob will come out seperately, since
the open(2) on the print/plotter device prevents other programs from
sending data to that device.

We found that is not unwise to have only one queue started, but this
because we have to operate some switch before the second queue should
run.

Now, I heard that it is possible to have two spooling directories for
one queue. This enables the submission of priority jobs to the queue
without having to go through the queue shuffle of topq for every job.

has anyone ever hacked lpr/lpd to do this?




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