fdisk自动进行分区

#!/bin/bash

cylinders=$(fdisk -l |grep cylinders | awk '{print $8}' | head -n 1)
real_cylind=$(($cylinders - 1))
echo $cylinders
echo $real_cylind

fdisk /dev/sda <<EOF
n
p
1
2048
10487807
a
1
n
p
2
10487808
77596671
t
2
82
n
p
3
77596672
$[real_cylind]
w
EOF