1/4 pound sliced bacon, cut crosswise into 1/2-inch strips
3 cloves garlic, minced
1/2 cup dry white wine
1 1/2 cups canned crushed tomatoes in thick puree (one 16-ounce can)
1 cup bottled clam juice
3/4 pound chopped clams, drained (about 1 1/2 cups)
1/3 cup chopped flat-leaf parsley
3/4 teaspoon salt, more if needed
1/4 teaspoon dried red-pepper flakes
3/4 pound linguine