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Old 03-21-2005, 11:52 AM   #1
Registered: Feb 2005
Location: UK
Distribution: Knoppix 3.7
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guids and suids

Quite simply, what are they?

Thanks a bunch!

Old 03-21-2005, 12:20 PM   #2
Registered: Jan 2005
Location: Between the chair and the desk
Distribution: Debian Sarge, kernel 2.6.13
Posts: 666

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It's actually GIDs and SUIDs. They stand for GroupID and SuperUserID, respectively. The latter is also reffered to as SwitchUserID (see what 'su' stands for). There's also UserID=UID as well. All of them are numbers that refer to a user or group. A regular user usually has an UID>=1000 and probably the same GID, root will have 0/0.
There is also the concept of suid,gid and sticky bits, which set the permissions on files/directories.
See more info at

Last edited by harken; 03-21-2005 at 12:27 PM.
Old 03-21-2005, 04:18 PM   #3
Registered: Feb 2005
Location: UK
Distribution: Knoppix 3.7
Posts: 285

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Rep: Reputation: 35
Thanks, I'll have a gander.

Probably take a while to sink in but eventually...


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