[rhn-users] processes stop on rhe 4

[Herta Van den Eynde]

On 17/08/07, Paula J. Lindsay <paula at scripps.edu> wrote:
> Hi everyone,
> I have a red hat enterprise 4 machine connected to an instrument.  There
> is something happening that I've never seen.
> The users log in and put the processes in the background "&" and then
> log off.  When they log off, the processes stop
> and they loose their jobs.  Has anyone heard of this?   Many thanks for
> any advice/suggestions/solutions.
> Paula
>
> --
> --*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
>   o The                 Paula J. Lindsay, IT Analyst III
>  /                      Research Computing, TPC21
> o   Scripps             phone:  858.784.9378
>  \                      fax:    858.784.9301
>   o Research            email: paula at scripps.edu
>  /
> o   Institute
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Hi Paula,

If you haven't done so already, install the 'screen' package.

I often work from a laptop, and sometimes from an unreliable windows
PC.  So if I want to run a job on a server that I don't want to get
interrupted, I usually go

$ screen
$ script ~/output.log.`date +%Y%m%d-%H%M` # optional
run whatever commands I need
<Ctrl/A/D> # detaches the screen

At that point, I can disconnect my laptop or reboot my unstable windows desktop.
I (or a colleague) can log in again from any source and then monitor
the job using a 'tail -f [output-file]', and can re-attach using
'screen -r'.

To terminate 'script', press <Ctrl/D>.  To terminate 'screen', press
<Ctrl/D> again.

FWIIW, the screen command needs write access to the tty device, so
logging in from one account, su-ing to another, and then running
'screen' usually doesn't work.

Hope this helps.

Kind regards,

Herta