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From: tr@samadams.princeton.edu (Tom Reingold)
Newsgroups: comp.unix.internals
Subject: Re: What does SUID, SGID and Sticky bits do on inappropriate files?
Keywords: Set-UID, Set-GID, Sitcky-Bit, Special Files
Message-ID: <5655@rossignol.Princeton.EDU>
Date: 27 Dec 90 21:41:14 GMT
References: <1990Dec25.032451.25017@gpu.utcs.utoronto.ca>
Sender: news@cs.Princeton.EDU
Organization: Noo Joizy -- The Cultural Mecca
Lines: 22

Here is some more (paraphrased) information from my System V Release 3
manual page for ls(1):

if doing "ls -l" on a file yields

-rwSrwlr-T  1 tr       other          10 Dec 27 16:35 file

then 

   1. The 'S' means the set-uid bit is on but the user-execute bit is
   off.  This is undefined.

   2. The 'l' means the set-gid bit is on but the group-execute bit is
   off.  This means mandatory locking will occur during access.

   3. The 'T' means the sticky bit is on but execution is off.  This is
   undefined.
--
        Tom Reingold
        tr@samadams.princeton.edu  OR  ...!princeton!samadams!tr
        "Warning: Do not drive with Auto-Shade in place.  Remove
        from windshield before starting ignition."