Cut cabbage into 2" squares, and cut carrot, onion, and green pepper into thin slices.
Put oil, garlic, and ginger in a wok, and heat at medium heat. After the wok is hot, add pork and fry for a couple of minutes, stirring until brown.
Add vegetables, turn to high heat, and cook stirring constantly until vegetables wilt (but do not over cook).
Add salt, pepper, soy sauce to taste, mix, and remove from heat to serve.