I wonder how hard it is to make a fake USB printer.
Like, a printer that takes any printout and goes "yep, that printed just fine" but nothing ever comes out anywhere
@foone what's your usage case?
@demofox I've got a program that keeps printing things at regular intervals, and it wastes several seconds between items. if I had a fake printer, I could do a real print batch at the beginning, then every time it tries to print, it just instantly succeeds, doing nothing.
@foone @demofox I think I used to use a software called PDF995 and set the output directory to a read-only folder for this type of edge case.
@foone @demofox curious what this sociopathic program is
How to add a fake, dummy, null printer in CUPS?

I'm writing a piece of software that supports multiple printers. In order to test it, I need to add multiple printers to my CUPS server. How can I do that? I want to add a few fake printers that w...

Super User
@foone @demofox What about using one of those usb to parallel adapters and install an ancient printer (like a Star LC10). IIRC those don't give any feedback so the computer just assumes it's printing.