[cups] How does CUPS find a driver?

[Timothy Murphy]

Brian Potkin wrote:

>> [tim at william ~]$ grep -i cupsFilter
>>   /usr/local/src/cnijfilter-source-4.00-1/ppd/canonmg5500.ppd
>> *cupsFilter: "application/vnd.cups-postscript 0 pstocanonij"
> 
> This line is for printing a job. CUPS now knows the final filter in the
> filter chain is pstocanonij. The line also causes cups-filters to
> produce PostScript as the output of its filtering process.
> 
>> *cupsFilter: "application/vnd.cups-command 0 cmdtocanonij"
> 
> This line is for processing printer maintenance commands sent to the
> printer.

Thanks very much for your reply.
I haven't understood your explanation completely, 
but will study it more carefully.

-- 
Timothy Murphy  
gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin