You need to setup a pipe from your parent to your child. I believe IO::Pipe will facilitate this. It's been quite a while since I've had to do it so I can't really give you a concrete example.
Update: I actually spent some time and came up with a simple example.
use IO::Pipe;
$pipe = new IO::Pipe;
if($pid = fork()) {
$pipe->writer();
while(<STDIN>)
{
print $pipe $_;
}
}
else
{
$pipe->reader();
while(<$pipe>)
{
$line = $_;
print "CHILD: $line";
}
}
For some reason the data isn't pushed through the pipe until you end the input stream (^D) setting $| didn't seem to help.
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