Kale and Shrimp Scampi

fresh linguine (can substitute dried)

unsalted butter, divided

olive oil, divided

large shallots, finely chopped

garlic, minced

red pepper flakes

shrimp (26/30), peeled and deveined (tails left on if desired)

kosher salt,

freshly ground black pepper,

white wine

juice of 1 lemon

chopped kale