The "linux" du command

The Linux du command also looks at the space used, but unlike the DF command, the Linux du command is a view of the space used by the file 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 output in kilobytes (1024bytes).

-M or--megabytes is output in megabytes.

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

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

-X or--one-file-xystem the file system at the beginning of the processing, if any other different file system directories are skipped.

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

-S or--separate-dirs displays the size of individual directories without the size of their subdirectories.

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

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

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

-H or--si is the same as the-h parameter, but the k,m,g is converted to 1000 units.

-L or--count-links duplicates the hardware-linked files.

4. Usage examples:

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

Command:

Du

Output:

[email protected] 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.

[Email protected] test]#

Description

Displays only the directory size of subdirectories below the current directory and the total size of the current directory, with the bottom 1288 being the total size of the current directory

Example 2: Display the space occupied by the specified file

Command:

Du Log2012.log

Output:

[email protected] test]# du Log2012.log

Log2012.log

[Email protected] test]#

Description

Example 3: View the occupied space for a specified directory

Command:

Du SCF

Output:

[email protected] 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

[Email protected] test]#

Description

Example 4: Show the space occupied by multiple files

Command:

Du log30.tar.gz log31.tar.gz

Output:

[email protected] test]# du log30.tar.gz log31.tar.gz

4 log30.tar.gz

4 log31.tar.gz

[Email protected] test]#

Description

Example 5: Show only the sum size

Command:

Du-s

Output:

[Email protected] test]# du-s

1288.

[Email protected] test]# du-s SCF

Scf

[Email protected] test]# CD.

[Email protected] soft]# du-s test

1288 test

[Email protected] soft]#

Description

Example 6: Easy-to-read format display

Command:

Du-h Test

Output:

[Email protected] soft]# 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

[Email protected] soft]#

Description

Example 7: Files and directories are displayed

Command:

Output:

[Email protected] soft]# Du-ah test

4.0K test/log31.tar.gz

4.0K test/test13.tar.gz

0 Test/linklog.log

0 Test/test6/log2014.log

300K Test/test6/linklog.log

0 Test/test6/log2015.log

4.0K Test/test6/log2013.log

300K Test/test6/log2012.log

0 Test/test6/log2017.log

0 Test/test6/log2016.log

608K Test/test6

0 Test/log2015.log

0 Test/test4/log2014.log

4.0K Test/test4/log2013.log

300K Test/test4/log2012.log

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

4.0K Test/log2013.log

300K Test/log2012.log

0 Test/log2017.log

0 Test/log2016.log

4.0K test/log30.tar.gz

4.0K test/log.tar.bz2

4.0K test/log.tar.gz

0 Test/test3/log2014.log

4.0K Test/test3/log2013.log

8.0K Test/test3

4.0K test/scf.tar.gz

1.3M Test

[Email protected] soft]#

Description

Example 8: Show how many files or directories each occupy the size of disk space, and also count their sums

Command:

Du-c log30.tar.gz log31.tar.gz

Output:

[Email protected] test]# du-c log30.tar.gz log31.tar.gz

4 log30.tar.gz

4 log31.tar.gz

8 Total

[Email protected] test]#

Description

With the-C option, Du shows not only the size of the two directories that occupy disk space, but also the sum of them in the last line.

The "linux" du command