Roger Leigh <rle...@codelibre.net> writes: > On Sat, May 15, 2010 at 02:34:57PM -0700, Russ Allbery wrote:
>> That's a good idea. I'm not sure if all UNIX group systems allow one >> to ask how many users are a member of a particular group, but if >> there's a way to ask that question at least in those group systems that >> support it, the implementation should be fairly straightforward. > The standard getgrnam/getgrgid (or the _r variants) are competely > portable and give you the list of users who are group members (so a > simple check through the user list is quick and easy). From the shell > "getent group $group" should return an empty user list. I was thinking more in terms of access restrictions than APIs. Being able to ask who is a member of a particular group is a potential privacy violation, so I wasn't sure if there were group systems in widespread use that would refuse to tell you any information about anyone other than yourself unless you had root or similar elevated credentials. -- Russ Allbery (r...@debian.org) <http://www.eyrie.org/~eagle/> -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/87bpcgpxkg....@windlord.stanford.edu
