Windows' command line leaves a lot to be desired. Anyways, that being said, your best bet is probably something like the following:

• Fire up the process with Win32::Process, as noted elsewhere. Make the process redirect its otuput to a temporary file (one of the few things that Windows' command prompt can do)
• Use $process->wait() (possibly with a timeout and interspersed with $main->update; if it's a long task)
• Open the temp file and read away.

Hope this helps.

 
perl -e 'print "I love $^X$\"$]!$/"#$&V"+@( NO CARRIER'

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