[TUHS] History of chown semantics

Doug McIlroy doug at cs.dartmouth.edu
Fri Jan 10 07:43:07 AEST 2014

Indeed, research Unix never allowed ordinary users to
change a uid. And even in the first edition, the superuser
was not allowed to do so on set-uid files, presumably to
prevent inadvertent laying of cuckoo eggs. The v6 note
about interaction with accounting reflected field
experience with the overly liberal stance of other Unixes.

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