None. Linus does open-source software, not computers. He is known for the LINUX OS, a clean room derivative of UNIX, that runs on many computers.
OS is an open-source operating system
LINUX and Unix OS is open-source operating system.....! but Windows version OS is not the open-source operating system....!
No. Linux followed its own path in history. Linus Torvalds wanted to have an OS that was free and resembles unix. He made the source code open to the public and with the years the os grew in to what we call linux today.
Linux was Linus Torvald's college project. He started this because at that time there was no free open source kernel available, only open source kernel was Minix, which was not free at the time.
Classic Mac OS is closed source. Mac OS X is closed source as well, but many libraries and applications within it are open source, e.g. XNU the kernel is open source, and Darwin the underlying UNIX operating system was open source.
Yes it is!
Linus Torvalds invented the Linux computer software. It is Open Source, which means it is free.
Having the source code open for anyone to edit or modify for free.
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The Darwin kernel of Mac OS X is open source, as are many other parts of the OS. (See links below) but Mac OS X itself is not open source and Apple only allows it to run on Apple hardware.
Is MacOS an open source system? No.