On Mon, Oct 05, 2015 at 05:13:40PM -0400, Hendrik Boom wrote:
> On Mon, Oct 05, 2015 at 09:47:02PM +0200, Riccardo Boninsegna wrote:
> > On Mon, Oct 5, 2015 at 9:12 PM, Hendrik Boom <hendrik@???> wrote:
> > > I installed lpr, and it did take a lot of cups off. Do I really need cups?
> >
> > Nope, especially with a Brother that's very LPR-friendly!
> > As you found out, cups-bsd is just a port of LPR programs to CUPS.
> >
> > > But I still don't know how to specify my network printer.
> >
> > I'm not familiar at all with LPR, but I know a printcap entry for the
> > printer is created (if it's currently connected via USB) by the
> > driver's postinst somewhere under /opt/Brother; according to the
> > printcap manpage, you'd have to edit the "lp" option -- the
> > description says "local printer device, or port@host for remote"!
>
> Presumeably that would be port 515 at whatever the IP number for the
> printer is. Will try that wen I'm home near the priniter again.
>
> And what's there in the way of termcap is a shell script
> /opt/brother/Printers/hl3170cdw/inf/setupPrintcapij that creates a
> termcap. I hope it will get executed at the right time. At bootup,
> perhaps?
>
> I'll see when I'm home again.

Hand-edited /etc/termcap:
root@notlookedfor:/home/hendrik# cat /etc/printcap
HL3170CDW:\
        :mx=0:\
        :sd=/var/spool/lpd/hl3170cdw:\
        :sh:\
        :lp=515@172.25.1.122:\
        :if=/opt/brother/Printers/hl3170cdw/lpd/filterhl3170cdw:
root@notlookedfor:/home/hendrik# 

Now I get

hendrik@notlookedfor:~$ lpr -h -PHL3170CDW Documents/math/Librationism=1407.3877v3.ps
lpr: cannot open /var/spool/lpd/hl3170cdw/.seq: Permission denied
hendrik@notlookedfor:~$

This happens even if I run as root:

root@notlookedfor:/home/hendrik# lpr -h -PHL3170CDW Documents/math/Librationism=1407.3877v3.ps
lpr: cannot open /var/spool/lpd/hl3170cdw/.seq: Permission denied
root@notlookedfor:/home/hendrik#

That directory is owned by the lp daemon:

oot@notlookedfor:/home/hendrik# ls -al /var/spool/lpd/hl3170cdwtotal 8
drwx------ 2 daemon lp   4096 Oct  5 14:40 .
drwxr-xr-x 5 root   root 4096 Oct 19 09:02 ..
-rw------- 1 daemon lp      0 Oct  5 14:32 acct
-rw------- 1 daemon lp      0 Oct  5 14:32 log
-rw------- 1 daemon lp      0 Oct  5 14:32 status
-rw------- 1 daemon lp      0 Oct  5 14:32 status.pr
root@notlookedfor:/home/hendrik#

and it contains no .seq file. Preumably that fle would be created as needed.
And presumably the permissions are checked in some way that can exclude root.

-- hendrik