Howto check, cancel and resume printer in cups using cli ?

Hi All, Usually when my printer get stuck, I check in gnome-cups-manage (or kprinter) to see what happen. When it paused, i click the icon, select all jobs and clik 'Cancel', then i choose 'Resume' so the printer goes online again. How can I do that without login to gnome / kde ? Can i do it from console ? What command to check, select which jobs (or all jobs), cancel jobs and resume printer ? regards, -- Arie Reynaldi Zanahar reymanx at gmail.com http://www.reynaldi.or.id