8
2
chmod g+s directory makes new files inherit the group of the directory. I thought that chmod u+s directory would make them inherit the directory owner, but they don't and I see no other effect.
basin
Posted 2014-11-11T13:32:13.687
Reputation: 394
5
Nothing useful, generally.
According to Sven Mascheck's page on special permission bits, the u+s bit only has an effect on three non-Linux operating systems:
on HP-UX up to 9, marks the file as context-dependent (pages 607, 828)
on FreeBSD, if built with the kernel option, allows user ownership to be inherited like g+s;
on SCO OpenServer, enables file versioning.
user1686
Posted 2014-11-11T13:32:13.687
Reputation: 283 655
But it seems to work on Ubuntu now. – Rick – 2019-02-26T10:00:56.653
homebrew uses
u+son Mac. – isomorphismes – 2020-01-12T17:36:36.530macOS is probably interpreting it like FreeBSD would. – user1686 – 2020-01-12T20:28:13.517