I came across this error when I run follow code on windows.
and if changed the command `dir` to `ipconfig`, it's ok.
I guess it because dir is a cmd internal command but ipconfig isn't.

Can anybody explain it for me.

Thanks

code:

use strict;
use IPC::Run qw(run timeout);

my [at] cmd = qw(dir);
my ($in, $out, $error);
open $in, "<in.txt";
open $out, ">out.txt";
open $error, ">error.txt";

run \ [at] cmd, $in, $out, $error, timeout(10) or die "error: $?";

close $in;
close $out;
close $error;


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Hi hsin,

On Thu, 21 Jul 2011 03:50:36 -0700 (PDT)
hsin <wangwangxin [at] gmail.com> wrote:

> I came across this error when I run follow code on windows.
> and if changed the command `dir` to `ipconfig`, it's ok.
> I guess it because dir is a cmd internal command but ipconfig isn't.

I think that's the case. You shouldn't depend on "dir" from within Perl
anyway because Perl has native and portable routines and modules to query the
file system:

http://perl-begin.org/uses/sys-admin/

Regards,

Shlomi Fish

>
> Can anybody explain it for me.
>
> Thanks
>
> code:
>
> use strict;
> use IPC::Run qw(run timeout);
>
> my [at] cmd = qw(dir);
> my ($in, $out, $error);
> open $in, "<in.txt";
> open $out, ">out.txt";
> open $error, ">error.txt";
>
> run \ [at] cmd, $in, $out, $error, timeout(10) or die "error: $?";
>
> close $in;
> close $out;
> close $error;
>
>



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optimised machines for them using real atoms.

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