[Zope-dev] Extrenal method unable to run the os.popen() or os.system() commands

[Ridzwan Aminuddin]

Oh yes, i forgot to mention that in my code i did use the absolute paths to my java .jar file as you can see i my code below, the absolute path to the Extensions directory is in the variable homedir. I also set my classpath to point to the folder just in case..

Any ideas why it won't work? and any suggestions for workarounds?

Thanks!


homedir = os.getcwd()
homedir = homedir + "/Extensions"

command = "cd "+homedir
os.popen(command)

command = "java -jar "+ '"' + homedir + "/" + "ActiveLearningTools.jar" + '" ' +
"prepArticles >> test.txt"
os.popen(command)

> -----Original Message-----
> From: wanster at inbox.com
> Sent: Fri, 9 Feb 2007 17:39:58 -0800
> To: dieter at handshake.de
> Subject: Re: [Zope-dev] Extrenal method unable to run the os.popen() or
> os.system() commands
> 
> Hi,
> 
> Since you say changing the working environment in zope is dangerous, is
> there any way around for what i need to do?
> 
> Is there a way i can find out the exact directory zope is on at that
> moment? and if i can find it is it a good idea for me to place the
> additional files i need to run my .jar in that directory?
> 
> Or should i just do everything in an absolute path method?
> 
> i.e when i wanna run my jar instead of using this as my "command"
> 
> java -jar ActivelearningTools.jar >> output.txt
> 
> I will do:
> 
> java -jar
> /var/lib/zope2.8/instance/plone-site/Extensions/ActiveLearningTools.jar
> >> /var/lib/zope2.8/instance/plone-site/Extensions/output.txt
> 
> Thanks in advance!
> 
> wan
> 
>> -----Original Message-----
>> From: dieter at handshake.de
>> Sent: Fri, 9 Feb 2007 19:58:06 +0100
>> To: wanster at inbox.com
>> Subject: Re: [Zope-dev] Extrenal method unable to run the os.popen() or
>> os.system() commands
>> 
>> Ridzwan Aminuddin wrote at 2007-2-9 00:47 -0800:
>>> ...
>> >	command = "cd "+homedir
>> >	os.popen(command)
>> 
>> This "popen" is useless.
>> 
>>   It will change the working directory in the new (!) process that
>> executes
>>   "command". But the effect is lost as soon as the process ends (after
>> the
>>   "cd" has been executed).
>> 
>>   "os.popen('cd ...')" will not affect the working directory
>>   of the Zope process (or any later 'os.popen').
>> 
>> 
>> Be warned: you should *not* change Zope's working directory.
>> Changing global resources (such as the working directory) is
>> dangerous in a multi thread environment (such as Zope).
>> 
>> 
>> 
>> --
>> Dieter
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