Hendrik Boom <hendrik@???> writes:
> On Mon, Oct 19, 2015 at 08:11:51PM +0100, Rainer Weikusat wrote:
>
>>
>> Send_job is the name of the lprng function for sending a job to a remote
>> print server. If you specifiy
>>
>> 515@172.25.1.122
>>
>> as printer, it will try to connect to port 515 on 172.25.1.122 (default
>> port) and then try to spool the job to printer 515, cf
>>
>> ,----
>> | The rm (remote machine or host) and rp or lp printer printcap options
>> | are used to specify the remote host and printer to be used. These values
>> | can be extracted from a printcap entry, or supplied in the following
>> | manner.

[...]

>> `----
>> http://www.brunel.ac.uk/~tony/LPRng/LPRng-HOWTO-5.html#rp
>
> Now that's useful documentation. Thank you. I wish I had found it
> earlier. So the lp should be
>
> something@172.25.1.122
>
> or equivalently,
>
> something@172.25.1.122:515
>
> and I'll have to find the printer documentation to find out how it
> refers to itself; that will be what I specify as 'something'.

You could try something like

lpc -S172.25.1.122 status

or

lpq -Pall@172.25.1.122

to get a list of 'all printers and queues'.