Re: [Jython-users] Help: how to get the os.system() stdout

[Raghuram D. <ra...@sy...>]

You can do something like os.system("ls -l >/tmp/testfile"). You may 
want to generate a temp file name and delete it after reading it. Note 
that readng stdout/err is very tricky in java as well.


Dong, Ming wrote:
> When run os.popen("ls","r"), I got error message like:
> 
> AttributeError: class 'org.python.modules.os' has no attribute 'popen'
> 
> I am using jython 2.1, any suggestions?
> 
> Thanks a lot!
> 
> Ming Dong
> 
> -----Original Message-----
> From: jyt...@li...
> [mailto:jyt...@li...] On Behalf Of Dave
> Kuhlman
> Sent: Thursday, June 29, 2006 11:57 AM
> To: jyt...@li...
> Subject: Re: [Jython-users] Help: how to get the os.system() stdout
> 
> On Thu, Jun 29, 2006 at 11:22:21AM -0400, Dong, Ming wrote:
>>
>> Hi,
>>
>>    I want to write the output of the os.system() to a log file, but
>> don't know how to read the output to a string. Could you give me some
>> suggestion?
> 
> You want one of the variants of popen.  See:
> 
>     http://docs.python.org/lib/os-newstreams.html
>     http://docs.python.org/lib/module-popen2.html
> 
> Here is an example:
> 
>     def test1():
>         outstream = os.popen('ls *.py', 'r')
>         for line in outstream:
>             print line.rstrip()
> 
> The other versions (popen2, popen3, ...) enable you to do things
> like pipe input to the command and read its output, read from
> stderr as well as stdout, etc.
> 
> Dave
> 
>