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A comment on Ubuntu on Windows. Parent comment

Re:Ubuntu on Windows by blinkingled on Wednesday March 30, 2016 @03:42PM (#11392330)
They actually do syscall translation on the fly from Linux to Windows. I suppose they had to add some calls to Windows for things in Linux that did not exist on Windows (various console ioctls for e.g.) but it is still a one to one translation.
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Re:Ubuntu on Windows by jychang on Wednesday March 30, 2016 @03:57PM (#11392436)
This isn't really easy to implement for some syscalls in NT, like fork(2) for example.
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Re:Ubuntu on Windows by willtim on Thursday March 31, 2016 @03:39AM (#11395586)
It's not possible to implement fork efficiently on Win32/64 which cygwin uses, but are you sure this is the case when using the NT native APIs?
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Re:Ubuntu on Windows by blinkingled on Wednesday March 30, 2016 @03:58PM (#11392444)
Yeah, it was a MS Research project that did the work.
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