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[Fwd: Re: No printing at all!]



Hi Clive,

I sent the message below more than 12 hours ago to the debian-user list:
I didn't see it there 
until now, so I'll try to send it again. 

BTW: I definitely don't know whether my suggestions below will work in a
network. I tested them, as I'll write below, only on a single machine
where they work ...

HTH

Nice week-end.

Best Regards
Wolfgang

-----Forwarded Message-----
From: Wolfgang Pfeiffer <roto@gmx.net>
To: debian-user-list <debian-user@lists.debian.org>
Subject: Re: No printing at all!
Date: Thu, 26 Feb 2004 22:27:05 +0100

On Wed, 2004-02-25 at 19:18, Clive Menzies wrote:
> On (25/02/04 17:23), Alisdair wrote:
> > After using Mandrake and Knoppix over the last couple of years I have finally 
> > managed to install a working Debian system :-), and everything seems to be 
> > fine except the printing :-(
> > 
> > I have looked through several forums, and done my best to rtfm but haven't 
> > come up with anything that has made a difference.  I suspect it is something 
> > very basic but...
> > 
> > I'm afraid I am at a complete loss.  lp seems okay.  CUPS seems to be properly 
> > installed.  In fact I have installed it and gs several times, but there is no 
> > output at all, and no indication that my HP Laserjet 5L (using the hpijs ppd) 
> > is even being told to do anything, although CUPS detects the printer is 
> > present on /dev/lp0.
> > 
> > Below is the contents of:
> > 1. lpinfo -v
> > 2. /var/log/cups/error.log
> > 3. /etc/cups/cupsd.conf
> > 
> > If anyone can help me get this sorted out I would be VERY grateful.
> > 
> > Regards, Alisdair.
> I am no expert but have wrestled (successfully in time) with printing both 
> locally and via the network.  I found adminstering printers via a web
> browser is fairly straightforward.  URL http://localhost:631/admin
> login as root and you should get a reasonable idea of what is going on.

Hi Clive 

I'd always try to do things as much and as often as possible as
non-root: Some time ago I removed my complete .mozilla files by hitting
the Enter key accidentally, and a bit too early:
rm -rf .mozilla/
Was a nice moment to realise, you'll certainly believe .. (actually I
simply wanted to remove the stuff in the Mozilla Cache ... )

I'd think it means shouting for problems if someone tries to become root
unnecessarily. Provided I understand you correctly you suggest to log
out of your non-root and user X to enter an X-session as root: IIRC I
even set Gnome to forbid root to start an X-session here: I know how
fast I make mistakes on X .... :)

Here's the URL  for CUPS where the documentation for authentication
stuff starts, IINM:

<http://localhost:631/sam.html#AuthClass>

And here's a
/etc/cups/cupsd.conf
that allows only users in group foo, on one machine with several users,
to manage the CUPS printing system, and only after he or she provided
their username/passwd ...

[ /etc/groups file ....
adduser <user-login-name> foo
... login ... logout .. IIRC ]

I didn't test so far whether this also works on a network connected to
some printer, but I'd believe it could work ... not being sure on that
..

At least here on 
http://localhost:631
on a single machine with several users: after some initial tests it
seems to work:

Here's the corresponding cupsd.conf:
--------------------------- 
LogLevel debug
Printcap /var/run/cups/printcap
<Location />
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
</Location>
<Location /admin>
AuthType Basic
AuthClass Group
AuthGroupName foo
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
</Location>
----------------------------------

So with this last cupsd.conf it seems you don't need to be root to
change your CUPS settings and you can decide who of the users on a
machine will be able to to change these settings ... 

I swear I love this crap, at least some times ..... :)

PS:
I'd 
cp -r /etc/cups/ /path/to/other/directory/cups.working
before changing some printer settings ... :)

HTH, too ...

Best Regards

Wolfgang

> 
> HTH
> 
> Clive
> -- 
> http://www.clivemenzies.co.uk
> strategies for business
-- 
Profile, Links: http://profiles.yahoo.com/wolfgangpfeiffer



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