different file for null

scrap.sh

@@ -3,6 +3,7 @@ START_NID=$1
 NID=$START_NID
 END_NID=$2
 FILENAME=A${1}-A${2}.json
+mkdir -p null
 while [ "$START_NID" -le "$END_NID" ];
 do
   echo Scraping: $NID # print
@@ -12,11 +13,16 @@ do
 
  	if [ "$HTTP_STATUS" = "200" ]
  	then
+		if [ "$DATA" = "null" ]
+		then
+			echo A$NID > null/A$NID
+		else
 		  echo $DATA | tee -a $FILENAME
 		  printf "\n" | tee -a $FILENAME
 		  START_NID=$(echo $[$START_NID+1])
 		  printf -v NID "%06d" $START_NID
-		  sleep 5
+		  sleep 1.5
+		fi
 	else
 	 	echo delaying
 	 	sleep 1000