message: Fix issue when de-compressing the zip file.
  Fix typo.
diff: @@ -7,7 +7,7 @@ fi
  DST_DATA_DIR=$2
  -echo "Warning: exsiting $DST_DATA_DIR is erased"
  +echo "Warning: existing $DST_DATA_DIR is erased"
  rm -rf $DST_DATA_DIR
  if [[ $3 == "nvt" ]]; then
  @@ -36,7 +36,7 @@ fi
  SCRIPT_TYPE=$3
  echo "Decompressing day_$1.gz..."
  -gzip -d day_$i.gz
  +gzip -d day_$1.gz
  if [ $? -ne 0 ]; then
  echo "Warning: Failed to decompress the file. Trying finding the uncompressed dataset..."
  fi
  