Running batch files and redirecting output to a file in LabwindowsCVI

[ax]

I am trying to run a batch file which gives output to command prompt. I want to capture that data to a file.

I am using LaunchExectableEx(d:\\myfile.bat >d:\\trial.txt,"",handle).This command creates a file, but there is no data in the file.

Can anyone help me in this regard?

[Wendy L]

Hello ax,

I wasn't able to reproduce the problem you are seeing.  I created a quick batch file:

@echo off
echo Hello World
pause

and ran the following command:

LaunchExecutable ("c:\\helloworld.bat > c:\\helloworld.txt");

and the output file was correctly written and saved.

Thanks.

[Alex D]

Just a guess. The > operator only redirects output written to standard output; not standard error. If the batch file calls things which write to standard error, that output would not be captured in the file.

Try:  LaunchExectableEx("d:\\myfile.bat 2>&1 > d:\\trial.txt","",handle);

This will redirect both standard out and error to the file.

Hope this helps,

-alex