[TUHS] Additional groups and additional directory permissions

[Clem Cole]

On Fri, Aug 2, 2019 at 4:36 AM <arnold at skeeve.com> wrote:

> Arthur Krewat <krewat at kilonet.net>:
> > Also, I don't think it's been mentioned, but there's the setuid bit on
> > directories - otherwise known as the sticky bit. When set, even if you
> > have rights to "write" the directory (meaning, delete files), you can't
> > delete those owned by other users. Useful for /tmp
>
> Also a SunOS invention, IIRC.
>
Nope, much older.  It was a BSDism -- Cory Hall 11/70 actually (V6
originally) - wnj probably, but it may have been somebody like Asa
Romberger or Bob Kriddle who were the admins.  VAXen distributions picked
it up and Sun got it from there.
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