#!/usr/bin/perl 
use strict;
$|++;

print "parent: test1\n";

system 1, 'perl -e "$|++; for (1..10) {print \"child $_\n\"; sleep 1;}"';

print "parent: test2\n";
sleep 2;
print "parent: test3\n";
sleep 5;
print "parent: test6\n";