fdisk一键分区

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umount /dev/sdb*; \
  echo -e "o\nn\np\n1\n\n+100M\nt\nc\na\nn\np\n2\n\n\nt\n2\n83\nw" | \
    sudo fdisk /dev/sdb && sudo mkfs.vfat -F 32 -n SDBOOT /dev/sdb1 && \
    sudo mkfs.ext4 -F -L mmclinux /dev/sdb2; \
  udisksctl mount -b /dev/sdb1; \
  udisksctl mount -b /dev/sdb2