diff --git a/resize.sh b/resize.sh
index ffc9ded..cf8af25 100644
--- a/resize.sh
+++ b/resize.sh
@@ -26,36 +26,36 @@ xda=$(lsblk -r --inverse "$root_drive" | grep -w disk | awk '{print $1}')
 # 删除 installer 分区
 installer_num=$(readlink -f /dev/disk/by-label/installer | grep -o '[0-9]*$')
 if [ -n "$installer_num" ]; then
-  # 要添加 LC_NUMERIC 或者将%转义成\%才能在cron里正确运行
-  # locale -a 不一定有"en_US.UTF-8"，但肯定有"C.UTF-8"
-  LC_NUMERIC="C.UTF-8"
-  printf "d\n%s\nw" "$installer_num" | fdisk /dev/$xda
-  update_part /dev/$xda
+    # 要添加 LC_NUMERIC 或者将%转义成\%才能在cron里正确运行
+    # locale -a 不一定有"en_US.UTF-8"，但肯定有"C.UTF-8"
+    LC_NUMERIC="C.UTF-8"
+    printf "d\n%s\nw" "$installer_num" | fdisk "/dev/$xda"
+    update_part "/dev/$xda"
 fi
 
 # 找出现在的最后一个分区，也就是系统分区
 # el7 的 lsblk 没有 --sort，所以用其他方法
 # shellcheck disable=2012
-part_num=$(ls -1v /dev/$xda* | tail -1 | grep -o '[0-9]*$')
-part_fstype=$(lsblk -no FSTYPE /dev/$xda*$part_num)
+part_num=$(ls -1v "/dev/$xda"* | tail -1 | grep -o '[0-9]*$')
+part_fstype=$(lsblk -no FSTYPE "/dev/$xda"*"$part_num")
 
 # 扩容分区
 # ubuntu 和 el7 用 growpart，其他用 parted
 # el7 不能用parted在线扩容，而fdisk扩容会改变 PARTUUID，所以用 growpart
 if grep -E -i 'centos:7|ubuntu' /etc/os-release; then
-  growpart /dev/$xda $part_num
+    growpart "/dev/$xda" "$part_num"
 else
-  printf 'yes\n100%%' | parted /dev/$xda resizepart $part_num ---pretend-input-tty
+    printf 'yes\n100%%' | parted "/dev/$xda" resizepart "$part_num" ---pretend-input-tty
 fi
-update_part /dev/$xda
+update_part "/dev/$xda"
 
 # 扩容最后一个分区的文件系统
 case $part_fstype in
 xfs) xfs_growfs / ;;
-ext*) resize2fs /dev/$xda*$part_num ;;
+ext*) resize2fs "/dev/$xda"*"$part_num" ;;
 btrfs) btrfs filesystem resize max / ;;
 esac
-update_part /dev/$xda
+update_part "/dev/$xda"
 
 # 删除脚本自身
 rm -f /resize.sh /etc/cron.d/resize
diff --git a/ubuntu-storage-early.sh b/ubuntu-storage-early.sh
index 58fd714..b71eb75 100644
--- a/ubuntu-storage-early.sh
+++ b/ubuntu-storage-early.sh
@@ -1,16 +1,16 @@
 #!/bin/bash
 
 get_xda() {
-  # 排除只读盘，vda 放前面
-  # 有的机器有sda和vda，vda是主硬盘，另一个盘是只读
-  for _xda in vda xda sda hda xvda nvme0n1; do
-    if [ -e "/sys/class/block/$_xda/ro" ] &&
-      [ "$(cat /sys/class/block/$_xda/ro)" = 0 ]; then
-      echo $_xda
-      return
-    fi
-  done
-  return 1
+    # 排除只读盘，vda 放前面
+    # 有的机器有sda和vda，vda是主硬盘，另一个盘是只读
+    for _xda in vda xda sda hda xvda nvme0n1; do
+        if [ -e "/sys/class/block/$_xda/ro" ] &&
+            [ "$(cat /sys/class/block/$_xda/ro)" = 0 ]; then
+            echo $_xda
+            return
+        fi
+    done
+    return 1
 }
 
 sed -i -E '/^\.{3}$/d' /autoinstall.yaml
@@ -27,11 +27,11 @@ xda=$(get_xda)
 # https://curtin.readthedocs.io/en/latest/topics/storage.html
 size_os=$(lsblk -bn -o SIZE /dev/disk/by-label/os)
 
-if parted /dev/$xda print | grep '^Partition Table' | grep gpt; then
-  # efi
-  if [ -e /dev/disk/by-label/efi ]; then
-    size_efi=$(lsblk -bn -o SIZE /dev/disk/by-label/efi)
-    cat <<EOF >>/autoinstall.yaml
+if parted "/dev/$xda" print | grep '^Partition Table' | grep gpt; then
+    # efi
+    if [ -e /dev/disk/by-label/efi ]; then
+        size_efi=$(lsblk -bn -o SIZE /dev/disk/by-label/efi)
+        cat <<EOF >>/autoinstall.yaml
   config:
     # disk
     - ptable: gpt
@@ -72,10 +72,10 @@ if parted /dev/$xda print | grep '^Partition Table' | grep gpt; then
       type: mount
       id: mount-efi
 EOF
-  else
-    # bios > 2t
-    size_biosboot=$(parted /dev/$xda unit b print | grep bios_grub | awk '{print $4}' | sed 's/B$//')
-    cat <<EOF >>/autoinstall.yaml
+    else
+        # bios > 2t
+        size_biosboot=$(parted "/dev/$xda" unit b print | grep bios_grub | awk '{print $4}' | sed 's/B$//')
+        cat <<EOF >>/autoinstall.yaml
   config:
     # disk
     - ptable: gpt
@@ -108,10 +108,10 @@ EOF
       type: mount
       id: mount-os
 EOF
-  fi
+    fi
 else
-  # bios
-  cat <<EOF >>/autoinstall.yaml
+    # bios
+    cat <<EOF >>/autoinstall.yaml
   config:
     # disk
     - ptable: msdos