Didier Kryn writes:
> I don't remember lpr can present you a list of printers,
> telling where they are, which kind of paper, page size and
> double-side they handle, if they're ready to print and if
> they're lacking ink. Not all of this actually works well in
> Cups, but at least it has this ambition.
Different lpr versions did have various bits of this. IIRC I wrote code to
autodetect and support seven different versions of it, and didn't enjoy
that task at all.
IPP is good, even if Cups isn't the best possible implementation.
Arnt