Re: [Trisquel-users] ReactOS - informations about free winxp clone?

[onpon4]

Not quite. GNU wasn't designed to be binary-compatible with proprietary Unix  
systems, just compatible with the POSIX specification. There's a difference.  
GNU is going to run the same shell scripts as the classic Unix, for example,  
but a GNU/Linux system can't run a C program compiled for a classic Unix  
system, and the kernel Linux can't just use whatever drivers classic Unix  
systems used.

Keep in mind, too, that GNU wasn't developed specifically to replace Unix;  
Unix was just what RMS chose to base GNU on, because it seemed like a good  
design. The goal of GNU was to have an operating system which was entirely  
free/libre software, not to let Unix users run the same proprietary software  
on an alternative system.