sticky bit on directories?

[Keith Packard]

I found an interesting feature in the kernel recently.

If you set the sticky bit on a directory then only the owner of a
given file can unlink it from that directory, even if the directory
is writable by everyone.

Is this widely known about?  I certainly never heard about it...

keith packard
...!tektronix!reed!motel6!keith	(home)
...!tektronix!azure!keithp	(work)