We study complex geodesics and complex Monge-Ampère equations on bounded strongly linearly convex domains in C n . More specifically, we prove the uniqueness of complex geodesic discs in such domains with prescribed boundary value and direction, when the boundaries of these domains have minimal regularity. The existence of such complex geodesic discs was proved by the first author in the 1990s, but the uniqueness was left open. Using this uniqueness result and a uniform C 1, 1/2 -estimate of complex geodesics and their dual mappings, as well as some other previously known results, we solve a homogeneous complex Monge-Ampère equation with prescribed boundary singularity, which was first considered by Bracci-Patrizio-Trapani on bounded strongly convex domains in C n with smooth boundary in their two important papers.