In a small bowl stir together the soy sauce, toasted sesame oil, sriracha, and brown sugar. Set the sauce aside.
Stir-fry instructions
Prepare linguine according to its package directions: drain and set aside.
While the linguine is cooking, slice steak lengthwise into 2-inch strips. Cut crosswise into 1/8 inch thick slices.
Lightly coat a large skillet or wok with olive oil and heat to medium heat.
Add the steak strips to the wok, stir-fry just until they are no longer pink, approximately 2 minutes. Add red pepper flakes, ginger and garlic and stir-fry for 1 minute. Remove the steak and seasonings to a plate, set aside and keep warm
Lightly re-coat the wok with more olive oil Stir-fry onion and celery until tender, approximately 5 minutes.
Add cabbage and cook until crisp-tender, approximately 2 more minutes, add sliced water chestnuts and return steak with seasonings to wok
Add the prepared stir-fry sauce and the cooked linguine to the wok, stir-fry for 2-3 minutes until everything is hot and combined.