Linux View available disk space df and du command .

df
df Viewing file systems by partition , How much space is occupied by the hard disk , Information such as how much space is left at present .

for example , We use df -h Command to view disk information , -h The option is to display appropriately according to the size :

Display content parameter description :

* Filesystem: file system
* Size: Partition size
* Used: Used capacity
* Avail: Usable capacity
* Use%: Percentage used
* Mounted on: Mount point
Related commands :

* df -hl: View disk free space
* df -h: View partition size for each root path
* du -sh [ Directory name ]: Returns the size of the directory
* du -sm [ folder ]: Return to this folder total M number
* du -h [ Directory name ]: View all file sizes under the specified folder ( Include subfolders )
du
du The original meaning of is disk usage, Indicates the disk space usage , Used to view the total size of the current directory .

For example, to view the size of the current directory :

<>du -sh

605M

Displays the space occupied by the specified file :

<>du biz.log

300 biz.log

Easy to read format display test Space occupied by directory :
# 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 to view the total size of the current directory :

* -s: For each Names Parameter only gives the total number of data blocks occupied .
*
-a: Recursively display the number of data blocks occupied by each file in the specified directory and each file in the subdirectory . If neither is specified -s, Also do not specify -a, Show only Names The number of disk blocks occupied by each directory and its subdirectories in the .
* -b: List disk space usage in bytes ( The system defaults to k In bytes ).
* -k: with 1024 List disk space usage in bytes .
* -c: Add a total at the end ( System default settings ).
* -l: Calculate all file sizes , For hard linked files , Then calculate multiple times .
* -x: Skipped directories on different file systems are not counted .
* -h: with K,M,G Unit , Improve readability of information .

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