Grasp the back or interior edge of the cabinet door that is opposite the hinges with your fingertips to open the door. There is a grooved or routed edge along the back or interior edge of these type of cabinet doors that allows you to grasp the door instead of an actual knob.
Remove any items from the cabinet as you would with a standard cabinet with knobs. Place any items into the cabinet as you would with a standard cabinet with knobs.
Hold onto the back or interior edge that you grasped to open the cabinet door and close the door gently. The grooved or routed edge will allow you to close the door without shutting your fingers in the door.