I was doing a test to check to see if the /etc/limits was working to
limit logins, (which didn't work). I created a user named "test".
using putty from a windows box, i logged in three times (ulimit was 2)
via ssh2. I was disappointed to see that it let me, but then 'exit' 'ed
out of each session.. after which i saw it still showed the user in the
"who" output.. utmp (via last) says the user is out.. but i can't correct
this. First i tried to "/etc/rc.d/rc.sshd restart" didn't work.
then i tried "/etc/rc.d/rc.sshd stop", "/etc/rc.d/rc.sshd start". didn't
work.
then i tried "init 1", "init 3". I thought that was supposed to boot every
one off the system.. but no, it didn't work either.. Anyway i can get
rid of this ghost user, without rebooting the system?

( I have a reboot scheduled next week, and this doesn't seem to be
effecting the system at all, additional pts/ just goes around the one
taken...)

Thanks for your help,
alex

PS.. Sorry for the lenght, relevant command output below:

root@aeshells.com:~# who
alex pts/1 May 15 23:40 (athlon.aeshells.org)
test pts/2 May 15 20:17

root@aeshells.com:~# last -n 10
batboyz pts/2 c211-28-160-120. Sat May 15 23:55 - 23:59 (00:03)
alex pts/1 athlon.aeshells. Sat May 15 23:40 still logged in
bunjoy pts/0 210.23.214.189 Sat May 15 23:40 - 00:06 (00:25)
root tty1 Sat May 15 23:40 - 23:55 (00:15)
alex pts/0 athlon.aeshells. Sat May 15 23:38 - 23:39 (00:00)
alex pts/0 athlon.aeshells. Sat May 15 23:37 - 23:38 (00:00)
alex tty1 Sat May 15 23:37 - 23:39 (00:02)
test pts/2 athlon.aeshells. Sat May 15 23:36 - 23:36 (00:00)
test pts/1 athlon.aeshells. Sat May 15 23:35 - 23:36 (00:00)
test pts/0 athlon.aeshells. Sat May 15 23:35 - 23:36 (00:00)
root@aeshells.com:~# ps -ef | grep ssh
root 26308 1 0 May15 ? 00:00:00 /usr/sbin/sshd
root 26364 26308 0 May15 ? 00:00:00 sshd: alex [priv]
alex 26376 26364 0 May15 ? 00:00:00 sshd: alex@pts/1


--
-Jeromy

On Sun, 16 May 2004 04:14:08 +0000, alex wrote:

> I was doing a test to check to see if the /etc/limits was working to
> limit logins, (which didn't work).

It only works for logins which have gone through /bin/login .

> I created a user named "test".

Way to go. (Just don't make the password "test" as well (or some such. :-)))

> using putty from a windows box, i logged in three times (ulimit was 2)
> via ssh2. I was disappointed to see that it let me,

Try editing /etc/passwd and put like so:
test:x:1010:100:ulimit=2:/home/test:/bin/bash

But if you don't want some user to login via SSH, better to set /bin/false
as the default shell for them (you may need to add that to /etc/shells too.)

To set limits on any resources, for some users, have a look at "lshell":
http://rm-f.net/lshell/

If you don't trust your shell users enough, to not mess about your boxen.
I would very much consider UML (User-mode Linux):
http://www.google.nl/groups?selm=pan...0deskt op.lan

And / or Linux-VServer:
http://www.linux-vserver.org/

> but then 'exit' 'ed out of each session.. after which i saw it still
> showed the user in the "who" output.. utmp (via last) says the user is
> out.. but i can't correct this.

Try removeing /var/run/wtmp or get an editor from "packetstorm" maybe ...

--
-Menno.