} elseif ($argv[1] == 'tempDS1') {
	  $outstr =  exec('cat /dev/shm/metern12.txt | egrep "^12\(" | grep "*C)"');
	} elseif ($argv[1] == 'tempDS2') {
	  $outstr =  exec('cat /dev/shm/metern13.txt | egrep "^13\(" | grep "*C)"');