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From "Daniel Wamara" <daol...@hotmail.com>
Subject Re: Commons Exec not producing the same result as the command line
Date Mon, 26 Apr 2010 08:20:19 GMT
Yes, I happened to sort it out, thanks.

Daniel

--------------------------------------------------
From: "Siegfried Goeschl" <siegfried.goeschl@it20one.at>
Sent: Monday, April 19, 2010 7:04 PM
To: "Commons Users List" <user@commons.apache.org>
Subject: Re: Commons Exec not producing the same result as the command line

> 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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