Linux命令：硬盘自动格式化

Posted 2020-08-17

硬盘自动格式化 /dev/sdb：

1、列出当前系统上所有的磁盘，让用户选择，如果选择quit则退出脚本；如果用户选择错误，就让用户重新选择；

2、当用户选择后，提醒用户确认接下来的操作可能会损坏数据，并请用户确认；如果用户选择y就继续，n就退出；否则，让用户重新选择；

3、抹除那块硬盘上的所有分区(提示，抹除所有分区后执行sync命令，并让脚本睡眠3秒钟后再分区)；并为其创建三个主分区，第一个为20M，第二个为512M, 第三个为128M，且第三个为swap分区类型；(提示：将分区命令通过echo传送给fdisk即可实现)

#!/bin/bash
#
echo "Initial a disk..."
echo -e "\033[31mWarning:\033[0m"
fdisk -l 2> /dev/null | grep -o "^Disk /dev/[sh]d[a-z]"

read -p "Your choice: "  PARTDISK

if [ $PARTDISK == ‘quit‘ -o $PARTDISK == ‘q‘ ]; then
  echo "quit"
  exit 7
fi

until fdisk -l 2> /dev/null |grep -o "Disk /dev/[sh]d[a-z]" |grep "Disk $PARTDISK" >> /dev/null;do
 read -p "Wrong option, Your choice again: "  PARTDISK
done

read -p "will destroy all data,continue:" CHOICE
until [ $CHOICE == ‘y‘ -o $CHOICE == ‘n‘ ];do
  read -p "will destroy all data,continue:" CHOICE
done

if [ $CHOICE == ‘n‘ ]; then
  echo "Cancel partition, Quiting..."
  exit 9
else
  ## Auto umount
  for I in `mount | grep "/dev/sdb" | awk ‘{print $1}‘`; do
    fuser -km $I
    umount $I
    echo "$I umount OK."
  done

  ## Delete disk partition
  dd if=/dev/zero of=$PARTDISK bs=512 count=1 &> /tmp/log.txt
  echo "Deleted partition, Formating new partition..."
  sync
  sleep 3
  ## Format disk
  echo ‘n
p
1

+20M
n
p
2

+512M
n
p
3

+128M
t
3
82
w‘ | fdisk $PARTDISK >> /tmp/log.txt
  partprobe $PARTDISK
  sync
  sleep 3

  ## Format partition
  mke2fs -j ${PARTDISK}1 >> /tmp/log.txt |echo "format ${PARTDISK}1 finished."
  mke2fs -j ${PARTDISK}2 >>  /tmp/log.txt |echo "format ${PARTDISK}2 finished."
  mkswap ${PARTDISK}3 >>  /tmp/log.txt |echo "format swap ${PARTDISK}3 finished."
fi

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