create automl blank dataset csv V2

arr[0]="TRAIN"
arr[1]="TRAIN"
arr[2]="TRAIN"
arr[3]="TRAIN"
arr[4]="TRAIN"
arr[5]="TRAIN"
arr[6]="TRAIN"
arr[7]="VALIDATION"
arr[8]="TEST"

IFS=$'\n'
for f in $(gsutil ls gs://BUCKET_NAME/IMAGE_FOLDER/**); 
do 
rand=$[ $RANDOM % 9 ];
echo ${arr[$rand]},$f,,,,,,,,,; 
done >> labels.csv;