Re: terminal devices left open after logging out

[janth]

On Mon, Nov 13, 2006 at 04:30:07PM +0900, Henry Nelson wrote:
> On Wed, Oct 04, 2006 at 06:23:49PM +0200, Julien Jehannet wrote:
> > >Date: Wed, 4 Oct 2006 09:36:36 +0900
> > >From: Henry Nelson
> > >Subject: terminal devices left open after logging out
> > >
> > >I'm not sure of the terminology so the Subject and description of the
> > >problem may not be accurate.  What happens is that _sometimes_ when I
> > >login, by ssh, a terminal device grabbed by some previous screen session
> > >is still there.  So if I run `who` I see the device, but no one is
> > >logged into it, and no screen sockets are open.  There doesn't seem to be
> > >any way to close the device other than rebooting the machine.
> > >
> > >% who
> > >henry ttyp0    Oct  4 09:17  (192.168.11.24)
> > >henry ttyp3    Oct  1 07:21  (:ttyp0:S.0)
> > >% screen -list
> > >No Sockets found in /home/henry/.screen.
> > >
> > >How can I prevent this from happening, and/or can I somehow clean up
> > >unused terminal devices (ttyp?) that are open without rebooting?  TIA.
> > 
> > I think is more related to SSH than screen. You can try to send HUP 
> > signals to your weird processes. If it works, see this FAQ entry for 
> 
> The thing is there don't seem to be any processes going.  Normally when
> I try to exit the shell or logout with processes running, it won't let me;
> there is some message like "there are processes running".  Also, 'ps'
> doesn't show any processes that are still running from a previous session.
> 
> >              http://www.openssh.org/faq.html#3.10
> 
> Thanks much!  This is the first real hint I've gotten.  I'll keep an
> eye out for this.  Unfortunately I use csh, and I didn't see a work-
> around for it (only bash, zsh and pdksh).

I often use detach ( http://detach.sourceforge.net/ ) when starting
programs that should run in the background / as a daemon.
This will work regardless of what your shell is.

-- 
Jan Thomas Moldung