Cook linguine according to package directions; drain and keep warm.
Peel shrimp, and devein, if desired.
Saut onion and garlic in oil in a large skillet until tender. Stir in tomato and next 4 ingredients; cook, stirring constantly, 3 minutes.
Add shrimp, and cook, stirring occasionally, 3 minutes or until shrimp turn pink. Stir in parsley, olives, and lemon juice; cook just until thoroughly heated.