Nerd humor.

https://x.com/PR0GRAMMERHUM0R/.../1661446997088391189

Windows: Let's define our variables by putting a # before them!
Rest of the world: I can't see your variables!

Actually, Windows NT made a feeble attempt at POSIX compliance:

“Microsoft POSIX subsystem is one of four subsystems shipped with the first versions of Windows NT, the other three being the Win32subsystem which provided the primary API for Windows NT, plus the OS/2 and securitysubsystems.

This subsystem implements only the POSIX.1 standard – also known as IEEE Std 1003.1-1990 or ISO/IEC 9945-1:1990 – primarily covering the kernel and C library programming interfaces which allowed a program written for other POSIX.1-compliant operating systems to be compiled and run under Windows NT. …”

https://en.m.wikipedia.org/wik...soft_POSIX_subsystem