> Basically once Unix went beyond serial terminals connected to dumb serial
> ports, we lost the ability to track users.
I would have phrased the comment somewhat different.
Once Unix adopted the process and file I/O abstraction,
a system wide user count became meaningless.
Unix should be contrasted with Primos or VMS where the
user memory space or program and serial terminal I/O
are used in defining the multiuser time-sharing capabilities
of the system.
Joachim Martillo
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