number of users in a group 2005-12-20 - By Arjan van de Ven
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On Tue, 2005-12-20 at 13:26 -0600, Chris Adams wrote:
> Once upon a time, Bowen, III, Clint <cbowen@(protected)> said:
> > I'm currently using RHEL 3, and I have a problem in that my
> > groups will only hold 32 members. While this works fine for
> > departmental use, making groups for some classes is problematic. Does
> > RHEL 4 increase this limit, and if so to what number? What is the
> > recommended workaround for this problem?
>
> This is a classic Unix problem because pretty much all Unix systems use
> a static array for the auxilliary group membership. IIRC the Cobalt/Sun
> kernel patch for the dynamic group list went in before RHEL 4 picked the
> kernel version, so it should support up to 65536. See the output of:
>
> echo -e '#include <limits.h>\nNGROUPS_MAX' | cpp | tail -1
afaik that's the other way around; a user can only be part of 32 groups.
but I don't think the number of members to a group is limited....
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