[GRASS-user] Stopping/killing a "puased" command

[Blumentrath, Stefan]

Hi again,

it was as simple as this:

./MarZone_x64.exe &
wait

Neither while loop nor checking for files needed (http://stackoverflow.com/questions/14254118/waiting-for-background-processes-to-finish-before-exiting-script).
That one will save me hours in processing time and will avoid trouble with unexpectedly long running processes!

Cheers
Stefan
________________________________________
Von: Stefan Lüdtke <sluedtke at gfz-potsdam.de>
Gesendet: Donnerstag, 30. Oktober 2014 10:08
An: Blumentrath, Stefan
Cc: grass-user
Betreff: Re: AW: AW: [GRASS-user] Stopping/killing a "puased" command

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you are welcome!

On 10/30/2014 10:04 AM, Blumentrath, Stefan wrote:
> Great! Thanks! That looks very promising and should do the trick. I
> shall try that... Many thanks again for your help!
>
> Cheers Stefan ________________________________________ Von: Stefan
> Lüdtke <sluedtke at gfz-potsdam.de> Gesendet: Donnerstag, 30. Oktober
> 2014 09:38 An: Blumentrath, Stefan Cc: grass-user Betreff: Re: AW:
> [GRASS-user] Stopping/killing a "puased" command
>
> So maybe that's the part I did not consider ... :-)
>
> The people more experienced in shell scripting might help here. I
> would go and start MarZone with and ampersand
>
> http://bashitout.com/2013/05/18/Ampersands-on-the-command-line.html
>
>  and than proceed in while loop ..
>
> But that is all wild guessing  ..
>
>
> On 10/30/2014 09:27 AM, Blumentrath, Stefan wrote:
>> Hi Stefan,
>
>> Many thanks, that sounds like a good idea. MarZone produces
>> output files by default, and I could regularly check if the last
>> output file has been produced. But how can I do it in parallell
>> to executing MarZone (I mean in the same script?), could you
>> point me to the relevant command(s)?
>
>> Cheers Stefan ________________________________________ Von:
>> Stefan Lüdtke <sluedtke at gfz-potsdam.de> Gesendet: Donnerstag, 30.
>> Oktober 2014 09:19 An: Blumentrath, Stefan;
>> grass-user at lists.osgeo.org Betreff: Re: [GRASS-user]
>> Stopping/killing a "puased" command
>
>> Hi Stefan,
>
>> can you pipe the MarZone output into a tmp file, check that file
>> in regular intervals for the desired string and stop the process
>> if the string is found. Not the most beautiful way I can think of
>> but maybe an option ..
>
>> Cheers,
>
>> Stefan
>
>> On 10/30/2014 09:06 AM, Blumentrath, Stefan wrote:
>
>
>>> Hi,
>
>
>
>>> I am trying to combine a commandline tool (MarZone) with GRASS
>>> in a shell script (MSYS in OSGeo4W or Ubuntu).
>
>>> The MarZone command should run in a loop where it recives new
>>> input from GRASS in each iteration.
>
>>> My scripts works in principle, however, unlike other command
>>> line tools, MarZone does not end when it is done, but  one has
>>> to press enter to stop.
>
>>> It ends with "Press return to exit." on screen.
>
>>> In order to handle this in a loop, I simply kill the process
>>> after the time I expect the sofware to run (plus a little time
>>> buffer):
>
>>> Like this:
>
>>> perl -e 'alarm shift @ARGV; exec @ARGV' 60 ./MarZone_x64.exe
>
>
>
>>> Unfortunately, this is neither an effient nor a stable
>>> solution as the time the software runs can vary quite a bit,
>>> depending on some parameter settings.
>
>
>
>>> My question is, is there a way to somehow catch, that the
>>> software is ready (when it prints "Press return to exit."), an
>>> kill it then?
>
>>> Any idea?
>
>
>
>>> Thanks for helping,
>
>>> Stefan
>
>
>
>>> _______________________________________________ grass-user
>>> mailing list grass-user at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>
>
>
>
>

- --
Stefan Lüdtke

Section 5.4-  Hydrology
Tel.: +49 331 288 2821
Fax: +49 331 288 1570
Email: sluedtke at gfz-potsdam.de

Helmholtz-Zentrum Potsdam
Deutsches GeoForschungsZentrum GFZ
(GFZ German Research Centre for Geoscience)
Stiftung des öff. Rechts Land Brandenburg
Telegrafenberg, 14473 Potsdam
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