# writeproc
## 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_\>
## Parameters
**Table 1** Parameter description
Parameter
Description
Value Range
data
Specifies 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
Specifies the proc file to which data is to be passed.
N/A
## Usage
The proc file implements its own **write** command. Calling the **writeproc** command will pass the input parameters to the **write** command.
> **NOTE:**
>The procfs file system does not support multi-thread access.
## Example
Run **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.