/home/murcia # ./wrapper.pl
$pid 11685                      <<<<< OK 
STDOUT: total 48
-rwxr-xr-x    1 murcia     users           77 Dec 14 11:30 test.pl
result: Status 0 in 11685
/home/murcia # ./wrapper.pl
$pid 11687                             <<<< not OK
/home/murcia #