> From [EMAIL PROTECTED] Tue Jul 4 12:07:58 2000
> Date: Tue, 4 Jul 2000 11:03:28 -0700 (PDT)
> To: [EMAIL PROTECTED]
> Subject: Re: LPRng: HP DeskJet 930C anyone? How to determine capabilities?
> From: [EMAIL PROTECTED]
>
> from the quill of [EMAIL PROTECTED] on scroll
> <[EMAIL PROTECTED]>
> >
> > No. Sorry, been down that path and it runs over a cliff.
> That bad huh?
> > if the :rw flag is set and the device is not a file then it opens it RW.
>
> And if that flag is not set, it opens it RO? So every printer that can
> do bidirectional (i.e. give status etc.) has an :rw in the printcap?
> Sorry for my stupid questions, I am just trying to understand.
Exactly right.
>
> > Now sockets are always RW,
>
> Meaning if the printer is connected via a network connection rather than
> a serial/parallel/usb connection right?
Exactly right.
>
> > so even if you use FCNTL to get the
> > flags, you get a RW indication. However, sometimes the device
> > does not always return status information,
>
> Indeed.
>
> > so you have to tell
> > the lower levels that it does not.
>
> With a printcap flag? Is there a :ro flag too then?
You need to pass Yet Another Flag. For example, if you are using
IFHP, you pass status@, meaning 'no status reading capability'
For example:
pr
:ifhp=model=pcl,status@
:filter=/usr/local/libexec/filters/ifhp
:sd=/var/spool/lpd/%P
OR
pr
:filter=/usr/local/libexec/filters/ifhp -Tmodel=pcl,status@
:sd=/var/spool/lpd/%P
>
> > No, perhaps not. I will look at this again. But it may only be on
> > Linux systems, which is still better than nothing.
>
> We Linux enthusiasts would simply say "who cares if no other *NIX
> supports it or not -- tough titties for them". :-)
Ummm... no comment on this... But I will note that some of my best
friends are Linux Developers (Duck and Cover! Duck and Cover!).
>
> Thanx for entertaining my queries Patrick.
>
> b.
>
>
> --
> Brian J. Murrell InterLinx Support Services, Inc.
> North Vancouver, B.C. 604 983 UNIX
> Platform and Brand Independent UNIX Support - R3.2 - R4 - BSD
Patrick ("Strange, this looks like penguin droppings on my car") Powell
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