Xref: utzoo comp.sys.att:8461 unix-pc.general:4495
Path: utzoo!utgpu!watserv1!watmath!uunet!utoday!comeau
From: comeau@utoday.UUCP (Greg Comeau)
Newsgroups: comp.sys.att,unix-pc.general
Subject: Re: Uniquely identifying a user: is it possible?
Message-ID: <1155@utoday.UUCP>
Date: 13 Jan 90 06:36:48 GMT
References: <25730@cup.portal.com> <1143@utoday.UUCP> <25845@cup.portal.com>
Reply-To: comeau@utoday.UUCP (Greg Comeau, Columnist, UNIX TODAY!)
Organization: UNIX Today!, Manhasset, NY
Lines: 27

In article <25845@cup.portal.com> thad@cup.portal.com (Thad P Floryan) writes:
>Examples abound re: nlist()'ing /unix, so that's not the problem.  The question
>was whether there's a non-privileged way of accurately identifying the user.
>It appears there is NO such way per (email) responses received to date.
>My purpose was not to audit, but to write a PD "who" that would highlight the
>present user (either with "*" or reverse video or whatever's applicable) per:
>	$ who
>	thad      w1          Jan 10 01:59
>	thad    * p0          Jan 12 00:32

Um, if that's what you want to do then assuming (there's that work again!)
a non-esotric use of windows why not just cross check the /dev/tty minor/
major with the minor/major of the dev stored in u/w/tmp?

Or you could even
write a shell script comboing probably the who command, the tty command,
and the sed command.

>And, don't laugh; I've had over 16 people (myself multiple times, too) logged
>into one of my UNIXPCs at ONE TIME.

Interesting.  Via what mechanism?
-- 
Greg, Comeau Computing, 91-34 120th Street, Richmond Hill, NY, 11418
Producers of CC C++, SysAdm columnist for UNIX Today!, Microsoft Systems Journal
(C programming), + others. Also, BIX c.language & c.plus.plus conf. moderator.
Here:attmail!csanta!greg / BIX:comeau / CIS:72331, 3421 / voice:718-849-2355