I’ve been poring over IPC::Run documentation, have tried running several of the code samples in the docs, and am having no joy. I’m a Perl newbie, and I’m sure I’m doing something wrong. But 2 hours of poking and starting and Googleing haven't helped me. May I impose for a few quick questions?

From http://search.cpan.org/~rsod/IPC-Run-0.79/lib/IPC/Run.pm, I copied and ran (after adding the ‘use’ command) the following: 

use IPC::Run qw (start pump finish );
## Build the harness, open all pipes, and launch the subprocesses

my $h = start \@cat, \$in, \$out, \$err ;

$in = "first input\n" ;


## Now do I/O.  start() does no I/O.

pump $h while length $in ;  ## Wait for all input to go


## Now do some more I/O.

$in = "second input\n" ;

pump $h until $out =~ /second input/ ;


## Clean up

finish $h or die "cat returned $?" ;

[download]
When I execute this, I get a clean compile on Windows XP with the latest ActivePerl, but get this error at execution time:

Command '' not found in C:\Perl\bin\, C:\WINDOWS\system32, C:\WINDOWS, C:\WINDOWS\System32\Wbem, C:\Program Files\Common Files\Roxio Shared\DLLShared, C:\Program Files\Sonic\MyDVD, C:\Sun\AppServer\jdk\bin, C:\Program Files\Sonic\MyDVD at C:/Program Files/eclipse/workspace/Wizard/run.pl line 4

I can’t figure out what command it is looking for. At a high level I know that I need to feed the ‘start’ some command to run. But I didn’t see an example of how to do this. Do I place a command into the ‘@cat’ array? What would I use to make this example work on Windows XP?

Many thanks!

tl

2005-02-18 Janitored by Arunbear - added code tags, as per Monastery guidelines

In reply to IPC::Run syntax question by Anonymous Monk

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