Linux Base command (i) du command

The Linux du command also looks at the usage space, but unlike the DF command, the Linux du command is a view of the space used by files and directory disks, or some difference from the DF command.

1. Command format:

du [Options] [file]

2. Command function:

Displays the disk usage space for each file and directory.

3. Command 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.

-K or--kilobytes is output in kilobytes (1024bytes).

-M or--megabytes is output in MB.

-S or--summarize only displays totals, listing only the last plus total value.

-H or--human-readable to k,m,g to improve the readability of the information.

-X or--one-file-xystem the file system at the start of the process, and if you encounter a different file system directory, skip.

-l< Symbolic link > or--dereference< the source file size of the symbolic link specified in the symbol link > Display option.

When-S or--separate-dirs displays the size of an individual directory, it does not contain the size of its subdirectories.

-x< files > or--exclude-from=< files > specify directories or files in < file >.

--exclude=< directory or File > skips the specified directory or file.

-D or--dereference-args displays the source file size for the specified symbolic link.

The-H or--si is the same as the-h parameter, but K,m,g is a unit of conversion in 1000.

-L or--count-links a file that duplicates the hardware link.

4. Use instance:

Example 1: Displays the directory or the space occupied by the file

Command:

Du

Output:

[Root@localhost test]# du

608./test6

308./test4

4./scf/lib

4./scf/service/deploy/product

4./scf/service/deploy/info

/scf/service/deploy

/scf/service

4./scf/doc

4./scf/bin

/scf

8./test3

1288.

[Root@localhost test]#

Description

Displays only the directory size of the subdirectory below the current directory and the total size of the current directory, and the bottom 1288 is the total size of the current directory

Example 2: Displays the space occupied by the specified file

Command:

Du Log2012.log

Output:

[Root@localhost test]# du Log2012.log

Log2012.log

[Root@localhost test]#

Description

Example 3: View the space occupied by the specified directory

Command:

Du SCF

Output:

[Root@localhost test]# du SCF

4 Scf/lib

4 scf/service/deploy/product

4 Scf/service/deploy/info

Scf/service/deploy

Scf/service

4 Scf/doc

4 Scf/bin

Scf

[Root@localhost test]#

Description