Heat oil to medium. Sautee roughly chopped garlic about 1 minute--until very fragrant but not brown. Add onions. Sautee until they begin to turn clear.
2
Add both cans of tomatoes, undrained, and simmer 15 minutes or until sauce is desired thickness. Add sugar, salt, pepper, simmer another 3.
3
Remove from heat. Stir in basil chiffonade. Serve immediately over fresh linguine!