Date: Sat, 2 Dec 2000 15:03:33 -0800 (PST) From: dima@unixfreak.org (Dima Dorfman) To: chris@awww.jeah.net (Chris Byrnes) Cc: questions@freebsd.org Subject: Re: Ghosted logins Message-ID: <20001202230333.966E93E09@bazooka.unixfreak.org> In-Reply-To: <200012021404.eB2E45j63561@awww.jeah.net> from "Chris Byrnes" at Dec 02, 2000 08:04:05 AM
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Chris Byrnes wrote:
>
> nessun qk nas-75-66.indy-t Thu05PM 1day -
>
> That person hasnt been actually logged in for over a day.
>
> I know you can telnet localhost a bunch of times to grab and use
> the tty the ghost in "w" is on, but with such a high one like
> "qk", it would take awhile.
>
> Is there an easier way to get rid of a ghosted login in "w"?
Sure. Compile (with libutil, using `gcc -o logout logout.c -lutil`)
and run (`./logout ttyqk`) the attached program. It uses the
logout(3) function to clear the utmp entry for the specified tty.
--
Dima Dorfman <dima@unixfreak.org>
Finger dima@unixfreak.org for PGP public key.
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#include <sys/types.h>
#include <err.h>
#include <libutil.h>
#include <stdio.h>
int
main(int argc, char *argv[])
{
if (argc < 2)
{
printf("Usage: %s <tty>\n", argv[0]);
return (1);
}
if (logout(argv[1]) != 1)
err(1, "logout");
else
printf("utmp entry for %s has been cleared\n", argv[1]);
return (0);
}
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