Check hard disk usage in linux (check disk usage in linux)

In Linux systems, you can use the following command to check the hard disk space usage:

1. df -h: Check the space usage of the entire disk.

bashdf -h

The output result is similar to:

Filesystem      Size  Used Avail Use% Mounted on/dev/sda2        20G  2.8G   17G  15% //dev/sda1       477M   61M  416M  13% /boot/dev/sda3       905G  116G  744G  13% /home 

The meaning of each column is:

– Filesystem: Partition name
– Size: Total partition space
– Used: Already Used space
– Avail: Available space
– Use%: Used percentage
– Mounted on: Mount point

2. du -sh: View the disk space occupied by the specified directory.

For example, to view the space usage of the /home directory:

bash du -sh /home

3. du -h –max-depth=1 /home: View the space occupied by each subdirectory under /home, only one layer is counted subdirectory.

bashdu -h --max-depth=1 /home 

4. du -sh *: View the space occupied by each file and subdirectory in the current directory.

bashdu -sh *

5. ncdu: A simple CLI disk space usage analysis tool. Visualization shows the space occupied by each subdirectory, and can be interactively analyzed in more detail.

Installation method:

bashsudo apt install ncdu     # Ubuntusudo yum install ncdu     # CentOS

Usage method:

bashncdu /home  # 分析/home目录空间使用

Summary:

This article introduces several commonly used disk space analysis methods and commands in Linux. Including:

– df -h: View the space usage of the entire disk
– du -sh: View the disk space occupied by the specified directory
– du -h –max-depth=1 /home : Check the space occupied by each subdirectory under /home, only one level is counted
– du -sh *: Check the space occupied by each file and subdirectory under the current directory
– ncdu: A simple CLI disk space usage analysis tool

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