The old stuff provided source-level compatibility with UNIX via posix compliance. The Subsystem for Linux is essentially an implementation of the Linux ABI, wh

The old stuff provided source-level compatibility with UNIX via posix compliance. The Subsystem for Linux is essentially an implementation of the Linux ABI, which is distinct from UNIX and provides true binary compatibility. The ironic thing is that WSL itself is deliberately not Linux; the only similarity is the user-space ABI. Unfortunately, I've met very few developers (admittedly interacting mostly with students) who have any understanding of what is Linux vs. GNU utilities vs. UNIX, vs. Ubuntu. "macOS is basically Linux right? Its because of the Terminal". screams