利用脚本实现分区创建与挂载
题目：创建一个10G的文件系统，类型为ext4，要求开机可自动挂载至单独数据/data目录；
利用脚本实现：
[root@localhost tmp]# cat partition.sh #!/bin/bash # #Created by Jimlv on Tue Jan 19 15:12:53 2016 #This script will guide you to create an 10GB ext4 filesystem and mount to boot up dd if=/dev/zero of=/dev/sdb bs=512 count=1 &> /dev/null sync echo ' n p 1 #一个空格，相当于使用磁盘的默认柱面 +10GB n p 2 #一个空格，相当于使用磁盘的默认柱面 +10GB n p 3 #一个空格，相当于使用磁盘的默认柱面 +10GB #此次为两个空格 t 2 82 w' | fdisk /dev/sdb fdisk -l mkfs.ext4 /dev/sdb3 #格式化分区 blkid /dev/sdb3 mkdir -p /data e2label /dev/sdb3 /data #设置分区的标签 echo "/data /dev/sdb3 ext4 defaults 0 0 " >> /etc/fstab #实现开机自动挂载 cat /etc/fstab
脚本执行结果：
[root@localhost tmp]# ./partition.sh
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x5782bdb5.
Command (m for help): Command (m for help): Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): Partition number (1-4, default 1): First sector (2048-83886079, default 2048): Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-83886079, default 83886079): Partition 1 of type Linux and of size 9.3 GiB is set
Command (m for help): Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p): Partition number (2-4, default 2): First sector (19533824-83886079, default 19533824): Using default value 19533824
Last sector, +sectors or +size{K,M,G} (19533824-83886079, default 83886079): Partition 2 of type Linux and of size 9.3 GiB is set
Command (m for help): Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p): Partition number (3,4, default 3): First sector (39065600-83886079, default 39065600): Using default value 39065600
Last sector, +sectors or +size{K,M,G} (39065600-83886079, default 83886079): Partition 3 of type Linux and of size 9.3 GiB is set
Command (m for help): Command (m for help): Partition number (1-3, default 3): Hex code (type L to list all codes): Changed type of partition 'Linux' to 'Linux swap / Solaris'
Command (m for help): The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00011c46
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 616447 307200 83 Linux
/dev/sda2 616448 4810751 2097152 82 Linux swap / Solaris
/dev/sda3 4810752 41943039 18566144 83 Linux
Disk /dev/sdb: 42.9 GB, 42949672960 bytes, 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x5782bdb5
Device Boot Start End Blocks Id System
/dev/sdb1 2048 19533823 9765888 83 Linux
/dev/sdb2 19533824 39065599 9765888 82 Linux swap / Solaris
/dev/sdb3 39065600 58597375 9765888 83 Linux
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
610800 inodes, 2441472 blocks
122073 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2151677952
75 block groups
32768 blocks per group, 32768 fragments per group
8144 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
/dev/sdb3: UUID="635fb22f-100f-4dd0-ae8c-08ba0617d0b5" TYPE="ext4"
#
# /etc/fstab
# Created by anaconda on Fri Dec 18 15:12:53 2015
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=d038aa4c-3935-435e-a9e6-e8671791f871 / xfs defaults 0 0
UUID=4d0f6b5b-65d5-4b6a-8fef-47060c483ab9 /boot xfs defaults 0 0
UUID=70f8fe06-94a1-44cc-9368-f28eb298d755 swap swap defaults 0 0
/data /dev/sdb3 ext4 defaults 0 0