The core language is something a person might plausibly learn in Y minutes. Getting any useful work done almost invariably requires learning a lot about the env

The core language is something a person might plausibly learn in Y minutes. Getting any useful work done almost invariably requires learning a lot about the environment and system your code is running in. The idioms of the Windows filesystem stack and most Linux userland code are radically different. Being able to write code for one will not confer immediate productivity in the other.