写一个脚本（前提：请为虚拟机新增一块硬盘，架设它为/dev/sdb）,为指定的硬盘创建分区
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，档用户选择后，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秒后在分区)，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，切第三个为swap分区类型；(提示：将分区命令通过echo传给fdisk即可实现)
#!/bin/bash # echo "Initial a disk..." echo -e " 33[31mWarning: 33[0m" fdisk -l 2> /dev/null | grep -o "^Disk /dev/[sh]d[a-z]" read -p "Your Choose:" PARTDISK if [ $PARTDISK == 'quit' ];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 aging:" 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 [ $CHOICE == 'n' ];then echo "QUIT" exit 9; else dd if=/dev/zero of=$PARTDISK bs=512 count=1 &> /dev/null sync sleep 3 echo 'n p 1 +20M n p 2 +512M n p n p 3 +128M t 3 82 w' | fdisk $PARTDISK &> /dev/null partprobe $PARTDISK sync sleep 2 mke2fs -j ${PARTDISK}1 &> /dev/null mke2fs -j ${PARTDISK}2 &> /dev/null mkswap ${PARTDISK}3 &> /dev/null fi
执行过程：
[root@localhost ~]# ./partdisk.sh Initial a disk... Warning: Disk /dev/sda Disk /dev/sdb Disk /dev/sdc Disk /dev/sdd Your Choose:/dev/sdb will destroy all data,continue:y 1+0 records in 1+0 records out 512 bytes (512 B) copied, 0.0304787 s, 16.8 kB/s [root@localhost ~]# fdisk -l Disk /dev/sda: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00051800 Device Boot Start End Blocks Id System /dev/sda1 * 1 39 307200 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 39 549 4096000 82 Linux swap / Solaris Partition 2 does not end on cylinder boundary. /dev/sda3 549 2611 16567296 83 Linux Disk /dev/sdb: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x18756792 Device Boot Start End Blocks Id System /dev/sdb1 1 4 32098+ 83 Linux /dev/sdb2 5 70 530145 83 Linux /dev/sdb3 71 87 136552+ 82 Linux swap / Solaris Disk /dev/sdc: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/sdd: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 [root@localhost ~]# mount /dev/sdb1 /mnt [root@localhost ~]# ls /mnt lost+found [root@localhost ~]# vi partdisk.sh [root@localhost ~]# umount /mnt