[TUHS] [COFF] Will someone please explain the history and usage of gpasswd / newgrp / sg?
clemc at ccc.com
Tue Nov 16 07:37:55 AEST 2021
On Mon, Nov 15, 2021 at 3:17 PM <arnold at skeeve.com> wrote:
> Clem Cole <clemc at ccc.com> wrote:
> > I'm sure it was used in many other ways, but that was certainly one
> > we used at UCB when wnj added them. Again check the 4.2 docs, where the
> > BSD group scheme is explained. This did seem useful and System V picked
> > it up also fairly soon after BSD released it to the world, and
> > did not change the BSD semantics.
> Not so soon, really. The new group scheme was widely released with
> 4.2 BSD (~ 1983). System V didn't pick up multiple groups until
> System V Release 4, circa 1989.
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