Date: Sun, 16 Sep 2012 20:37:48 +0100 From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-questions@FreeBSD.org Subject: Re: What are negative permissions? Message-ID: <50562A8C.9040504@FreeBSD.org> In-Reply-To: <50562121.2030507@dreamchaser.org> References: <50562121.2030507@dreamchaser.org>
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[-- Attachment #1 --] On 16/09/2012 19:57, Gary Aitken wrote: > Can someone explainn to me what "negative group permissions" are? It's where the group ownership of a file gives it fewer permissions than are allowed for the world in general. Suppose you have a file with these permissions and ownership: foo bar -rwx---r-x The owner -- foo -- has full read, write and execute permissions on the file. Anyone has read and execute permissions. But the group -- bar -- has no permissions. Now, logically, you might think that the world permissions would override the lack of group permissions, but in fact, that's not what happens. Permissions like that mean 'everyone *except* members of group bar can read and execute this. Cheers, Matthew -- Dr Matthew J Seaman MA, D.Phil. PGP: http://www.infracaninophile.co.uk/pgpkey [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlBWKpQACgkQ8Mjk52CukIy1tACgk3QO0CShNnQWGnQe6K4AzNkB bYYAnj2xRgMFKBRAnyJL2NhYlWzDTDTz =KyYr -----END PGP SIGNATURE-----
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