Final answer:
The incorrect statement is that Linux cannot run on mainframe computers. Linux is versatile and runs on various platforms, including mainframes, and has become the OS of choice for many different computing environments.
Step-by-step explanation:
The incorrect statement is: Linux can run on personal computers and minicomputers, but not mainframe computers. In reality, Linux has been widely adopted across various platforms, including personal computers, minicomputers, and also mainframe computers. This open-source operating system has gained popularity because of its versatility and free distribution. It is capable of being configured to meet the needs of different computing environments, from small embedded systems to large supercomputers.
Over time, Linux has become the operating system of choice for top-ranking supercomputers and has been used in companies, university research labs, and government operations. The other statements about UNIX are accurate: it was designed to run on minicomputers in network environments. There are indeed different versions of UNIX, and UNIX operating systems are categorized into System V and BSD due to their different initial developers.