How to check the folder size in linux

Linux is a powerful operating system that is widely used in servers and personal computers. In Linux systems, viewing folder sizes is a common operation, which is very important for managing system resources and checking disk usage. This article will introduce several methods to check the size of folders in Linux systems.

Method 1: Use the du command

The du command is a tool used to estimate file and directory capacity in Linux systems. With the du command, you can view the size of a folder and sort it according to the directory hierarchy.

To view the size of a folder, you can use the du command according to the following syntax:

du [options] [directory]

Among them, the options can be adjusted as needed. Some commonly used options include:

-h: Displays the size of files and directories in human-readable format.

-s: Only displays the total size of the specified directory, not the size of subdirectories.

-c: Display the total size on the last line, including the size of all specified directories.

For example, to view the size of all files and subdirectories in the current directory, you can use the following command:

du -h

To view the size of a specific directory, you can use the command Specify the path to the directory, for example:

du -h /path/to/directory

Method 2: Use the ncdu command

ncdu is A powerful command line tool for interactively viewing the size of files and directories in a Linux system. The ncdu command allows users to browse files and directories in a visual interface and sort them by size.

To use the ncdu command, you first need to install the command line tool. You can use the following command to install ncdu in Debian/Ubuntu system:

sudo apt install ncdu

After the installation is complete, you can use the following syntax to run the ncdu command:

ncdu [ Options][Table of Contents]

where options can be adjusted as needed. Some commonly used options include:

-r: Display the size of files and directories recursively.

-x: Exclude directories outside the mount point.

-q: Do not display the progress bar.

For example, to view the size of the current directory and its subdirectories, you can use the following command:

ncdu -r /

Method 3: Use the ls command in combination The awk and du commands

ls command is used to list the details of files and directories. By combining the awk and du commands, you can view the size in folder units.

To use the ls command combined with the awk and du commands to view the size of the folder, you can use the following command:

ls -ld */ | awk '{print $5,$9}' | xargs du -sh

This command works as follows:

1. ls -ld */: Lists all folders in the current directory and displays their detailed information.

2. awk '{print $5,$9}': Extract the size and name of the folder from the output of the ls command.

3. xargs du -sh: Apply the du command to each folder to calculate its size and display it in human-readable format.

Through the above command, you can easily check the size of the folder.

To sum up, the Linux system provides a variety of methods to view the size of the folder. You can easily understand the size of a folder and overall disk usage by using the du command, ncdu command, or a combination of ls, awk, and du commands. Whether you're managing a server or a PC, these methods can be very useful when it comes to understanding folder sizes. .

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