Was POSIX created because of Linux? [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broa开发者_开发知识库d, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 11 years ago.

There are many versions of Linux systems. Is it because of Linux that POSIX was created?

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No. POSIX predates Linux. POSIX was created because there are many flavors of UNIX (AT&T, BSD, etc.), not Linux.