php editor Youzi will introduce you how to check the disk space in Linux system. Understanding computer disk space query methods is critical to system management and optimization. Through simple commands and tools, you can easily understand disk usage, free up space in time, and ensure the normal operation of the system. Follow our guide to master the skills of checking disk space and make your Linux system more efficient and stable.

How to operate:

View via df and du commands

df

df View the file system in units of disk partitions, and you can obtain information such as how much space is occupied by the hard disk and how much space is currently left.

For example, we use the df -h command to view disk information. The -h option displays it appropriately according to the size:

Display content parameter description:

• Filesystem：File system
• Size：Partition size
• Used：Used capacity
• Avail：The capacity that can still be used
• Use%: Used percentage
• Mounted on: Mount point

Related commands:

• df -hl: Check the remaining disk space
• df -h: Check the partition size of each root path
• du -sh [Directory name]: Return the directory size Size
• du -sm [folder]: Return the total number of M in the folder
• du -h [directory name]: View the size of all files in the specified folder (including subfolders )

du

du is disk usage, which means to display the usage of disk space and is used to view the total size of the current directory.

For example, check the size of the current directory:

# du -sh

605M.

Display the space occupied by the specified file:

# du log2012.log

300 log2012.log

Display the space occupied by the test directory in an easy-to-read format:

# du -h test

608K test/test6

308K test/test4

4.0K test/scf/lib

4.0K test/scf/service/deploy/product

4.0K test/scf/service/deploy/info

12K test/scf/service/deploy

16K test/scf/service

4.0K test/scf/doc

4.0K test/scf/bin

32K test/scf

8.0K test/test3

1.3M test

du command is used to view the total size of the current directory:

• -s: Only the total number of occupied data blocks is given for each Names parameter.
• -a: Recursively display the number of data blocks occupied by each file in the specified directory and each file in the subdirectory. If neither -s nor -a is specified, only the number of disk blocks occupied by each directory in Names and its subdirectories is displayed.
• -b: List the disk space usage in bytes (the system defaults to k bytes).
• -k: List disk space usage in units of 1024 bytes.
• -c: Add a total at the end (system default setting).
• -l: Calculate the size of all files. For hard link files, calculate multiple times.
• -x: Skip directories on different file systems and do not count them.
• -h: Use K, M, G as units to improve the readability of information.

View hard disk space through graphical interface

For users who are accustomed to using graphical interfaces, there is a more intuitive and convenient method. Simply open a file manager (such as Nautilus or Thunar), select the directory or partition you are interested in, and right-click the mouse to select the "Properties" option in the pop-up menu. In the properties window, you will be able to see details such as the total capacity, used space, and remaining free space of the directory or partition.

Check hard disk space through third-party tools

If you want to get more detailed information about hard disk space, you can also use some third-party tools. For example, GParted is a powerful disk partitioning tool that can not only view the usage of hard disk partitions, but also manage and adjust partitions. In addition to the principles of the Linux operating system, Baobab is an intuitive and easy-to-use disk space analysis tool. It can graphically display the space occupied by each directory in your system, helping you quickly find files or directories that take up too much space.

Precautions:

When checking the hard disk space, please pay attention to the following points:

• 1. Make sure you have sufficient permissions to perform the corresponding operations;
• 2. Pay attention to choosing the appropriate viewing method, and choose the command line or graphical interface according to your own needs;
• 3. Regularly clean up useless files and temporary files to free up more hard disk space;
• 4. Operate carefully to avoid deleting important files or directories.

Through the introduction of this article, I believe that everyone has mastered the method of checking hard disk space under the Linux operating system. Whether you are a command line master or a graphical interface enthusiast, you can easily get the information you need. Remember, rational use of hard disk space will help improve system performance and work efficiency.

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