# process.kill

## Function

Terminate the started child process. Under Windows, it will try to recursively terminate the child process tree of the process first, and then terminate the process itself.

## Syntax

```bt
process(program).child().kill()
```

## Parameters

No parameters.

## Return value

| Type | Description |
| ------ | ------ |
| Bool | Returns true if the termination signal is successfully sent; returns false if there is no child process handle or the process has exited. |

## Example

```bt
cmd = process('cmd')
result = cmd.kill()

// Output: false
print result
```

## Notes

- kill will not clear the currently saved child process handle.
- Kill under Windows will recursively terminate the child process tree through the system process snapshot, which is suitable for canceling multi-level conversion tasks such as PowerShell, WPS, and poppler.
- Under Linux/macOS, kill still terminates the direct child process; if the business requires cancellation at the process group level, it should be managed by the started external program itself.