# writeproc
- [Command Function](#section366714216619)
- [Syntax](#section8833164614615)
- [Parameter Description](#section12809111019453)
- [Usage](#section15935131220717)
- [Example](#section79281818476)
- [Output](#section12742311179)
## Command Function
This command is used to write data to a specified proc file system. The proc file system supports the input of string parameters. Each file needs to implement its own method.
## Syntax
writeproc <_data_\> \>\> /proc/<_filename_\>
## Parameter Description
**Table 1** Parameters
Parameter
Description
Value Range
data
Indicates the string to be entered, which ends with a space. If you need to enter a space, use "" to enclose the space.
N/A
filename
Indicates the proc file to which data is to be passed.
N/A
## Usage
The proc file implements its own **write** command. After the **writeproc** command is called, the input parameter will be passed to the **write** command.
> **NOTE:**
>The proc file system does not support multi-thread access.
## Example
Enter **writeproc test \>\> /proc/uptime**.
## Output
OHOS \# writeproc test \>\> /proc/uptime
\[INFO\]write buf is: test
test \>\> /proc/uptime
> **NOTE:**
>The uptime proc file temporarily implements the **write** command. The **INFO** log is generated by the implemented **test** command.