On Wed, Apr 16, 2025 at 03:16:29AM CEST, Lee <ler...@gmail.com> said:
> On Mon, Apr 14, 2025 at 10:27 AM Dan Purgert wrote:
> >
> > On Apr 14, 2025, Marc SCHAEFER wrote:
> > > I wrote:
> > >
> > > > If you
> > > >    sudo systemctl disable cups # and maybe others
> > >
> > > Actually, if you follow the discussion, the CUPS Bonjour auto-discovery
> > >
> > >    - it presumably handled by the cups-browsed package
> > >      (you can uninstall it, or systemctl disable it,
> > >       if you don't want printer auto-detection on your
> > >       network)
> > >
> > >    - it could also be handled by mDNS (?)
> >
> > Yep, 'cups-browsed' is the mDNS listener service (plugin for avahi?) so
> > that cups can find printers announcing themselves via mDNS.
> 
> I'm not sure I understand, but
> $ sudo systemctl stop cups.service
> 
> $ lp -d Canon_MG3600_series check-for-updates.sh
> lp: Bad file descriptor

You stopped cups (ie the whole printing system), not cups-browsed (the mDNS 
listener to get printers of the local
network announcing themselves by Zeroconf)

-- 
Erwan David

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