# du
## Command Function
This command is used to query the disk space occupied by a file.
## Syntax
du \[_-kKmh_\] \[_file..._\]
## Parameters
**Table 1** Parameter description
Parameter
Description
Value Range
--help
Displays the parameters supported by the du command.
N/A
-k
Displays the occupied blocks, each of which is 1024 bytes by default.
N/A
-K
Displays the occupied blocks, each of which is 512 bytes (POSIX).
N/A
-m
Displays the disk space in MB.
N/A
-h
Displays the disk space in human-readable format K, M, and G, for example, 1K, 243M, or 2G.
N/A
file
Specifies the target file.
N/A
## Usage
- The **du** command is used to obtain the disk usage of a file rather than a directory.
- The value of **file** must be the file name. It cannot contain the directory where the file is located.
## Example
Run **du -h testfile**.
## Output
Command output
```
OHOS:/$ du -h testfile
1.8K testfile
```