[Linux] Linux practical operation --- disk partitioning and mounting

Disk partition, mount

(1) Basic knowledge of partition

① The way of partition

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② Disk partition under windows

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(2) Linux partition

① Principle introduction

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② Hard disk description

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③ View the mounting status of all devices

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指令：lsblk -f

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指令：lsblk

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(3) Classic case of mounting

① Description

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② How to add a hard disk

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③ Step 1 of adding hard disk to virtual machine (add hard disk to virtual machine)

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After restarting the system:
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④ Step 2 of adding hard disk to the virtual machine (partition)

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说明： 开始分区后输入n，新增分区，然后选择p ，分区类型为主分区。
两次回车默认剩余全部空间。最后输入w写入分区并退出，若不保存退出输入q。

Step diagram:
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⑤ Step 3 of adding hard disk to the virtual machine (formatting)

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(You can use lsblk -f to check, that is, success)
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⑥ Step 4 of adding a hard disk to the virtual machine (mounting)

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ps: mount on the command line, it will be invalid after restart
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⑦ Step 5 of adding a hard disk to the virtual machine (permanently mount)

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Modify /etc/fstab to realize the mount and
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add content

added, execute mount -a to take effect

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(4) Disk condition query

① Query the overall disk usage of the system

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② Query the disk occupancy of the specified directory

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(5) Disk situation-practical instructions for work

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① Count the number of files in the /home folder

wc -l  :统计行

|  :管道符，将前面的结果交给后面处理

grep “^-” :筛选，只保留一般的文件

grep "^d" :筛选，只保留目录

-R ：递归统计子文件夹下的文件或目录

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② Count the number of directories in the /home folder

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③ Count the number of files in the /home folder, including those in subfolders

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④ Count the number of directories under the folder, including those in subfolders

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⑤ Display the directory structure in a tree

Install tree first

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