How can I have more than 16 groups per user?



The number of groups per user can be increased to at most 32:



set ngroups_max = 32


This setting may give rise to NFS interoperability problems, as
typical NFS servers only support 16 groups when using AUTH_SYS/AUTH_UNIX.


The other NFS authentication mechanisms map "netids" to usernames
on the servers and can support more than 16 groups.





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