2008/5/19 Russ Cox <rsc@swtch.com>:

> > I have spent some time trying to figure out the working configuration for
> > being able to print on a network (postscript) printer oki5900dn.
> > I know its IP address.
> >
> > But I haven't succeeded so far.
> >
> > I prepared a PS file, say a.ps.
> > I removed the '!' letter from rc/bin/service/!tcp515, so now I
> > have rc/bin/service/tcp515.
> > I added a line to /sys/lib/lp/devices like this:
> > oki next_door localhost tcp!192.113.32.182!9100 81920 post+duplex ...
>
> If there is some machine that is already
> in charge of spooling to the printer, you
> would be better off handing the job to
> that machine instead of connecting directly
> to the printer, since many printers don't handle
> multiple connections on 9100 particularly
> gracefully.  To hand the job to another machine
> via the fairly standard LPD protocol, see the
> "vogon" line in /sys/lib/lp/devices for an
> example.
>
> If you are going to set up your own machine
> as the one in charge of the printer (as you have tried),
> you have to use a resolvable address where you put
> "localhost".  On Plan 9, "localhost" is not a
> known name--it doesn't make sense in config
> files, which are usually shared across many
> machines--and by default there is no network
> devices for 127.0.0.1.
>
> You can add an entry for your machine to
> /lib/ndb/local and then use your machine's name
> in the /sys/lib/lp/devices line.
>
> Russ
>
> Thanks, R.
>