Linux under the Disk Management du command usage instructions

Function: Counts the size of the disk space that the directory (or file) occupies.

Syntax: du [options] [files or directories]

Parameters:

-S: Only the total number of blocks of data used for each names parameter is given.
-A: Recursively displays the number of blocks of data in each file and subdirectory in the specified directory. If-S is not specified or-A is specified, only the number of disk blocks per directory in names and each subdirectory in it is displayed.
-B: The disk space usage is listed in bytes (the system defaults to K bytes).
-K: Lists disk space usage in 1024-byte units.
-C: Finally add a total (system default).
-L: Calculates all file sizes, and calculates multiple times for hard linked files.
-X: Skipping directories on different file systems does not count. Simple example:

[Yanue@server www]$ du-h--max-depth=1
676K./avatar
7.9M./wp-includes
6.4M./wp-admin
18M./wp-content
33M. Use examples:

Instance 1. Displays the directory or the space occupied by the file

Du [file or directory] Instance 2: Display space occupied by multiple files

Du [file or directory] [file or directory] Instance 3: Displays the size of the disk space used by several files or directories, and counts their sum

du-c [file or directory] [file or directory] Instance 4: Sorted by Space size

Du|sort-nr|more

Usage Example:

1> to display disk usage for a directory tree and each subtree

Du/home/linux

This displays the number of disk blocks in the/home/linux directory and each of its subdirectories.

2> to display the disk usage of a tree and each subtree in 1024-byte units

Du-k/home/linux

This shows the number of 1024-byte disk blocks in the/home/linux directory and each of its subdirectories.

3> displays the disk usage of a directory tree and each subtree in MB

Du-m/home/linux

This shows the number of MB disk blocks in the/home/linux directory and each of its subdirectories.

4> displays the disk usage of a directory tree and each subtree in GB

Du-g/home/linux

This displays the number of GB disk blocks in the/home/linux directory and each of its subdirectories.

5> View the size of all directories and subdirectories under the current directory:

Du-h.

“.” Represents the current directory. can also be replaced with a clear path

-H indicates an easy-to-understand unit of K, M, and G

6> View the size of the user directory under the current directory and do not want to look at other directories and their subdirectories:

Du-sh User

-S means the summary, which lists only one summarized value

Du-h–max-depth=0 User

–max-depth=n represents a depth to the N-tier directory, which is set to 0, meaning that it is not drill-down to subdirectories.

7> lists the size of all directories and files under the user directory and its subdirectories:

Du-ah User

-A representation includes directories and files

8> lists the size of directories in the current directory that do not include the XYZ string:

Du-h–exclude= ' *xyz* '

9> want to show more information about the user directory and subdirectory size in one screen:

du-0h User

-0 (Bar 0) represents the information for each directory that is listed, without wrapping, but directly outputting the information for the next directory.

10> displays all disk usage for only one directory tree

The code is as follows

Copy Code

[Maple@linux ~]$ [Maple@linux ~]$ du 8./test/links 8./test/dir/subdir1 8./test/dir/subdir2 /test/dir 160./test 108./test2 1492. [Maple@linux ~]$ [Maple@linux ~]$ du-0 8./test/links8./test/dir/subdir18./test/dir/subdir220./test/dir160/test108./test21492. [Maple@linux ~]$ Du-c 8./test/links 8./test/dir/subdir1 8./test/dir/subdir2 /test/dir 160./test 108./test2 1492. 1492 Total [Maple@linux ~]$ [Maple@linux ~]$ Du-h 8.0K./test/links 8.0K./test/dir/subdir1 8.0K./test/dir/subdir2 20K./test/dir 160K./test 108K./test2 1.5M. [Maple@linux ~]$ [Maple@linux ~]$ Du-k 8./test/links 8./test/dir/subdir1 8./test/dir/subdir2 /test/dir 160./test 108./test2 1492. [Maple@linux ~]$ [Maple@linux ~]$ Du-sh 1.5M. [Maple@linux ~]$ [Maple@linux ~]$ Du-s 8./test/links 8./test/dir/subdir1 8./test/dir/subdir2 4./test/dir 132./test 108./test2 1224. [Maple@linux ~]$ [Maple@linux ~]$ du-sh--exclude= "sub*" 8.0K./test/links 4.0K./test/dir 132K./test 108K./test2 1.2M. [Maple@linux ~]$ [Maple@linux ~]$ Du-h 8.0K./test/links 8.0K./test/dir/subdir1 8.0K./test/dir/subdir2 20K./test/dir 160K./test 108K./test2 1.5M. [Maple@linux ~]$

Supplemental Note : du displays the disk space occupied by the specified directory or file.

Parameters
A or-all displays the size of individual files in the directory.
-B or-bytes displays the directory or file size in bytes.
-C or--total displays the sum of all directories or files in addition to the size of individual directories or files.
-D or--dereference-args displays the source file size for the specified symbolic connection.
-H or--human-readable to k,m,g to improve the readability of the information.
The-H or--si is the same as the-h parameter, but K,m,g is a unit of conversion in 1000.
-K or--kilobytes in 1024 bytes.
-L or--count-links a file that calculates hardware connections repeatedly.
The source file size for the symbol connection specified in the-l< symbol connection > or--dereference< symbol connection > Display option.
-M or--megabytes is in 1MB.
-S or--summarize displays totals only.
When-S or--separate-dirs displays the size of an individual directory, it does not contain the size of its subdirectories.
-X or--one-file-xystem the file system at the start of the process, and if you encounter a different file system directory, skip.
-x< files > or--exclude-from=< files > specify directories or files in < file >.
--exclude=< directory or File > skips the specified directory or file.
--max-depth=< the directory layer > beyond the specified number of layers, ignored.
--help display Help.
--version Displays version information.