Is UNIX an open source Operating System?

Once again, another incorrect answer. UNIX is for sure no open source. You're clearly confusing GNU Linux (which is POSIX) with UNIX.

UNIX is not and has neveer been an open source operating system. unix is a vender base operating system and the vendors will not share their source code to the public. That why the Linux operating system was introduced.

I have found lot of questions answers on this page to be incorrect. base on the answer provided from the database. Please......I advice that the administrator of this site re-visit their database and the answers to thier questions.