get return value from batch

[ronenbenchamo]

Hi All,
I would like to run a batch file from perl and ger the reutun value from the batch file,
How can I do it?

I try to run system or exec but it didn’t work

Any idea?

$val=system("test.bat");

$val=exec “test.bat”;

Thanks
Ronen

[AdrianH]

Hi All,
I would like to run a batch file from perl and ger the reutun value from the batch file,
How can I do it?

I try to run system or exec but it didn’t work

Any idea?

$val=system("test.bat");

$val=exec “test.bat”;

Thanks
Ronen

$val = system("cmd /c test.bat");

Adrian

[KevinADC]

exec() - The exec() function executes a system command AND NEVER RETURNS

system() - The return value is the exit status of the program as returned by the wait() call.



If you want output returned (not exit status) you have to use backtiks or the qx operator:

$return = `arguements here`;
$return = qx/arguements here/;

[AdrianH]

exec() - The exec() function executes a system command AND NEVER RETURNS

system() - The return value is the exit status of the program as returned by the wait() call.



If you want output returned (not exit status) you have to use backtiks or the qx operator:

$return = `arguements here`;
$return = qx/arguements here/;

That is true if you want the $return string to contain the text that will be returned by the execution. If you want the errorlevel, it will not work.

Oh, if you wish to get perl to execute a batch file and get it not to display anything, you would do this:

$return = system("cmd /c batchFile.bat > nul");

Note: by passing off to a batch file, this will not be 100% portable.


Adrian

[KevinADC]

That is true if you want the $return string to contain the text that will be returned by the execution....
Adrian

And that seems to be the case here. But maybe the OP will let us know what they are really trying to do: get output or exit status.

[AdrianH]

And that seems to be the case here. But maybe the OP will let us know what they are really trying to do: get output or exit status.

Yeah, I guess "the return" value is kinda ambigious.


Adrian