[cups.general] Printing to a File
matthew at zeut.net
Tue Jun 19 22:55:04 PDT 2007
Kurt Pfeifle wrote:
>> I'm trying to do something that I thought would be very simple, that is,
>> setup a cups printer that will just dump it's output to a file.
>> The reason I'm doing this is that I have a program that prints to a
>> Zebra barcode printer. However the program isn't working and I want to
>> see exactly what my program is sending to the printer. I tried to
>> create a RAW local printqueue that points to /tmp/foo or some such
>> thing. I restarted cups but it doesn't work, nothing ever goes into the
> This is not the correct approach, for 2 reasons:
> (1) printing the job as "raw" would not give you much info. Raw jobs
> byepass the CUPS filtering queue and end up at their destination
> completely un-modified
This is what I want, I don't want CUPS to modify the program output at all.
> (2) the builtin file:/ backend in CUPS is purposefully not supporting
> raw printing AFAIR (for security reasons).
> You have to write your own "2file" backend and use that. Try this one (it is purposefully made more explicit than required):
> --------------------- snip -------------------------------------------
> HOWTO use it:
> (1) Copy to /usr/lib/cups/backend/2file and make it executable
> (2) Install printer like this:
> lpadmin -p fileprinter -v 2file:/path/to/file/output.prn -E -P /path/to/PPD.ppd
> (3) Each job will end up in /path/to/file/output.prn; new jobs will
> overwrite the previous one.
> Make sure that /path/to/file/ exists and is writeable for whatever user your cupsd runs as....
Thank you very this worked great. I did have to restart cups after
creating the /usr/lib/cups/backend/2file file before the lpadmin command
Got what I want now.
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