How to determine if a SID is group or user?

John M Trostel jtrostel at
Thu Nov 9 13:51:46 GMT 2000

How would I figure out if a specific ACE entry pertains to a group or a

I can go in and look at the uid and/or gid with sid_to_uid or sid_to_gid
(from the ace), but there must be some way to differentiate between the
group and user ace's.

John M. Trostel
Linux OS Engineer
jtrostel at

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