Drain clams, reserving liquid; set aside. Coat a large nonstick
skillet with cooking spray; place over medium high heat until hot.
Add onion; saute until tender. Add reserve clam liquid; reduce heat &
simmer uncovered 15 minutes. Stir in clams, parsley, garlic powder &
pepper. Cook until thoroughly heated. Combine clam mixture & linguine
in a large bowl. Toss well. Sprinkle with parmesan cheese & serve
immediately.