The CUPS docs say to change the printer defaults by ....lpoptions -p printer/instance -o name=valueThe option I want to change isFXColorMode/Output Color: *Color BlackSo I have tried ..lpoptions -p test_printer/FXColorMode/Output -o Color=Black But I get the errorUnable to add printer or instance: Undefined error: 0Where am I going wrong?
Set default options in cups
cups