On Wed, Jun 13, 2001 at 11:53:48AM -0400, Charles Lu wrote:
> How do I direct the messages destined for STDERR and redirect them to
> STDOUT?
>
>
>
> I have a perl script A that calls another program B. If there is bad input,
> Program B dumps out a lot of error messages through STDERR. I want to be
> able to stop my perl script when it detects messages coming from program B.
> What is the best way to do that? One way I thought of is by redirecting
> error messages to STDOUT and capture it in my perl program and TERMINATE the
> perl program if it detects anything. (when program B runs normally, there
> is no output)
Well, if you're on a Unix(-like) system, you can redirect STDOUT on the
command line:
$return = `program_B 2>&1`;
if ($return) {die "Program B blew up.\n"};
Not sure whether something like the following would work or not.
open PROGRAM_B, "program_B 2>&1 |";
I'm sure others will have more elegant solutions.
chrs
rob c
