It might be that you have something other than the value of $/ at the end of the line - what OS are you running this on ? You could determine what is on the end of the line by redirecting the output to a file and examining it with od or its moral equivalent.

Of course it is only the 'Syntax OK' message that is going to STDOUT - as jmcnamara points out any error messages will go to STDERR so you should arrange for that to be redirected

You also might want to consider examining $? rather than comparing the output string so your test would become :

  if ( $? )
  {
     print $rc;
     $errors++;
  }
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/J\