pid.patch

   1 --- rsnapshot-1.4.2/rsnapshot-program.pl~       2015-12-12 00:55:44.000000000 +0100
   2 +++ rsnapshot-1.4.2/rsnapshot-program.pl        2018-12-04 11:41:44.825674546 +0100
   3 @@ -2257,7 +2257,7 @@ sub log_msg {
   4                                 exit(1);
   5                         }
   6
   7 -                       print LOG '[', get_current_date(), '] ', $str, "\n";
   8 +                       print LOG '[', get_current_date(), '][', $$, '] ', $str, "\n";
   9
  10                         $result = close(LOG);
  11                         if (!defined($result)) {