dontcare 0 Light Poster

I can't get my printer to be set, under a regular user, as default. I checked my cups server and its up and running and I checked port 631. Port 631 has my usb printer but when I go to print anyting it shows lpr. My system tools does not contain a printer manager and I was wondering if someone could give me a shell command to run the printer manager, I'm using slack 10.0.

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