Conmi的正确答案——linux硬盘管理命令（持续更新中）

系统：Ubuntu 22.04 Server

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命令：lsblk
功能：列出所有可用或指定块设备的信息。默认情况下，该命令以树状格式打印所有块设备(RAM磁盘除外)。

示例：

$ lsblk
loop0                       7:0    0 61.9M  1 loop /snap/core20/1405
loop1                       7:1    0 79.9M  1 loop /snap/lxd/22923
loop2                       7:2    0 44.7M  1 loop /snap/snapd/15534
loop3                       7:3    0   47M  1 loop /snap/snapd/16292
loop4                       7:4    0   62M  1 loop /snap/core20/1611
loop5                       7:5    0  103M  1 loop /snap/lxd/23541
sda                         8:0    0    1T  0 disk
├─sda1                      8:1    0    1M  0 part
├─sda2                      8:2    0    2G  0 part /boot
└─sda3                      8:3    0 1022G  0 part
  └─ubuntu--vg-ubuntu--lv 253:0    0  100G  0 lvm  /
sr0                        11:0    1 1024M  0 rom

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命令：df
作用：“df”显示包含每个文件名参数的文件系统上的可用磁盘空间量。如果没有给出文件名，则显示当前挂载的所有文件系统上的可用空间。

学习链接：【菜鸟教程】——Linux df 命令

示例：

$ df -h # 一般直接这样使用
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命令：fdisk
作用：fdisk是一个对话框驱动的程序，用于创建和操作分区表。它能识别GPT、MBR、Sun、SGI和BSD的分区表。可用于增删改查分区，是运维中用的比较多的。

学习链接：【菜鸟教程】—— Linux fdisk 命令

示例：

$ fdisk -l
Disk /dev/loop0: 61.89 MiB, 64901120 bytes, 126760 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 /dev/loop1: 79.95 MiB, 83832832 bytes, 163736 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 /dev/loop2: 44.68 MiB, 46845952 bytes, 91496 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 /dev/loop3: 46.96 MiB, 49242112 bytes, 96176 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 /dev/loop4: 61.96 MiB, 64966656 bytes, 126888 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 /dev/loop5: 102.98 MiB, 107986944 bytes, 210912 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 /dev/sda: 1 TiB, 1099511627776 bytes, 2147483648 sectors
Disk model: Virtual disk
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: DF20645D-D630-4E8E-9995-65DB460E13DC

Device       Start        End    Sectors  Size Type
/dev/sda1     2048       4095       2048    1M BIOS boot
/dev/sda2     4096    4198399    4194304    2G Linux filesystem
/dev/sda3  4198400 2147481599 2143283200 1022G Linux filesystem


Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 100 GiB, 107374182400 bytes, 209715200 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

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