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From Siegfried Goeschl <siegfried.goes...@it20one.at>
Subject Re: Commons Exec not producing the same result as the command line
Date Mon, 19 Apr 2010 17:04:55 GMT
Hi Daniel,

any progress and/or information regarding your problem?

Cheers,

Siegfried Goeschl

On 14.04.10 11:54, Daniel Wamara wrote:
> I did make a wrapper, that's the script I am calling from the exec and
> even calling the wrapper through exec, I get the same thing I get when I
> use no wrapper. It's very unlikely that another application is picked up
> as it is the only instance of the application installed on the server (a
> Red Hat EL 3).
>
> Daniel
>
> --------------------------------------------------
> From: "sebb" <sebbaz@gmail.com>
> Sent: Wednesday, April 14, 2010 11:46 AM
> To: "Commons Users List" <user@commons.apache.org>
> Subject: Re: Commons Exec not producing the same result as the command line
>
>> On 14/04/2010, Daniel Wamara <daolwin@hotmail.com> wrote:
>>> Very unlikely IMO because they both call an external process which has
>>> nothing to do with Java and if there was some kind of problem with
>>> the path,
>>> I think the external process would have thrown an error of some kind.
>>
>> If the PATH is different, it may pick up a different application.
>>
>> Do other Exec calls work OK?
>>
>> Try creating a wrapper shell script with no parameters.
>> Call that interactively and from Exec.
>> Add debug echo statements as necessary to determine what is happening.
>>
>>> Regards,
>>> Daniel W.
>>>
>>> --------------------------------------------------
>>> From: "sebb" <sebbaz@gmail.com>
>>> Sent: Wednesday, April 14, 2010 11:36 AM
>>>
>>> To: "Commons Users List" <user@commons.apache.org>
>>> Subject: Re: Commons Exec not producing the same result as the
>>> command line
>>>
>>>
>>> > On 14/04/2010, sebb <sebbaz@gmail.com> wrote:
>>> >
>>> > > On 14/04/2010, Daniel Wamara <daolwin@hotmail.com> wrote:
>>> > > > Thanks but I don't think this will help solve the problem as I
can
>>> see in
>>> > > > the log that the command which is executed is the correct one
>>> and > > as
>>> said,
>>> > > > copy-pasting the command seen in the logs is producing a file
>>> completely
>>> > > > different than the one created by Commons Exec.
>>> > >
>>> > >
>>> > > Then the two invocations are most likely using different
>>> classpaths > > at
>>> > > some point.
>>> > >
>>> >
>>> > ... I mean PATHs.
>>> >
>>> >
>>> > >
>>> > > > Regards,
>>> > > > Daniel W.
>>> > > >
>>> > > > --------------------------------------------------
>>> > > > From: "sebb" <sebbaz@gmail.com>
>>> > > > Sent: Wednesday, April 14, 2010 1:18 AM
>>> > > > To: "Commons Users List" <user@commons.apache.org>
>>> > > > Subject: Re: Commons Exec not producing the same result as the
>>> command line
>>> > > >
>>> > > >
>>> > > > >
>>> > > > > On 13/04/2010, Daniel Wamara <daolwin@hotmail.com>
wrote:
>>> > > > >
>>> > > > > > Good evening all,
>>> > > > > >
>>> > > > > > I am trying to call ffmpeg via the command exec in order
to
>>> transcode
>>> > > > some files and the strange thing happening is that the files >
>>> > produced
>>> are
>>> > > > not the same as the one I can create when calling the same command
>>> via the
>>> > > > command line.
>>> > > > > >
>>> > > > > > This is how I am calling fmpeg and I get a file with
a
>>> particular codec
>>> > > > in it (strangely not the right one) although launching in the
>
>>> > command
>>> line
>>> > > > exactly what I have in the sb.toString() which is the command
>>> to > > be
>>> > > > executed, the file created has a correct codec. So to say, the
>>> > > same
>>> command
>>> > > > started via Exec and the one started via the command line have
not
>>> the same
>>> > > > result. Anyone has an idea?
>>> > > > > >
>>> > > > > > Thanks.
>>> > > > > > Daniel Wamara
>>> > > > > >
>>> > > > > > StringBuilder sb = new
>>> > > > StringBuilder("/home/ect/scripts/transcoding.sh ");
>>> > > > > >
>>> > > > > > sb.append(" " + source.getAbsolutePath());
>>> > > > > >
>>> > > > > > sb.append(" " + attributes.getCodec());
>>> > > > > >
>>> > > > > > sb.append(" " +
>>> > > >
>>> String.valueOf(attributes.getSamplingRate().intValue()));
>>> > > > > >
>>> > > > > > sb.append(" " + target.getAbsolutePath());
>>> > > > > >
>>> > > > > >
>>> > > > > > logDebug("command --> " + sb.toString());
>>> > > > > >
>>> > > > > >
>>> > > > > > CommandLine commandLine =
>>> > > > CommandLine.parse(sb.toString());
>>> > > > > >
>>> > > > >
>>> > > > > Why do you build up the command-line and then parse it?
>>> > > > >
>>> > > > > Much safer to add the arguments one at a time, see:
>>> > > > >
>>> > > > > http://commons.apache.org/exec/tutorial.html
>>> > > > >
>>> > > > > under the heading "Build the Command Line Incrementally"
>>> > > > >
>>> > > > >
>>> > > > >
>>> > > > > > DefaultExecutor executor = new DefaultExecutor();
>>> > > > > >
>>> > > > > > executor.execute(commandLine);
>>> > > > > >
>>> > > > > >
>>> > > > >
>>> > > > >
>>> > > >
>>> ---------------------------------------------------------------------
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>>> > > > >
>>> > > > >
>>> > > > >
>>> > > >
>>> > > >
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>>> > > >
>>> > > >
>>> > >
>>> > >
>>> >
>>> >
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>>> >
>>> >
>>> >
>>>
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>>>
>>
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>>
>
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