my $pid1 = open( my $fh1, '|-');
if ( $pid1 == 0 )
{
    print "child1 sez: $$ forked, now exec()ing false!!\n";
    exec (qw/false/) or die "Can't exec false $!";
}

my $pid2 = open( my $fh2, '|-');
if ( $pid2 == 0 )
{
    print "child2 sez: $$ forked, now exec()ing true!!\n";
    exec (qw/true/) or die "Can't exec false $!";
}

sleep 1; # just so the output makes more sense
print "Hi, I'm the parent, and I'm going to wait for pid1=($pid1) and pid2=($pid2)!\n";

my $dead_pid;
$dead_pid = waitpid $pid1, 0;
print "parent sez: pid $dead_pid exited with status $?\n";
$dead_pid = waitpid $pid2, 0;
print "parent sez: pid $dead_pid exited with status $?\n";