> ## Documentation Index
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# shell
# `prefect.cli.shell`
Shell command — native cyclopts implementation.
Run shell commands as Prefect flows.
## Functions
### `output_stream`
```python theme={null}
output_stream(pipe: IO[str], logger_function: Callable[[str], None]) -> None
```
Read from a pipe line by line and log using the provided logging function.
### `output_collect`
```python theme={null}
output_collect(pipe: IO[str], container: list[str]) -> None
```
Collect output from a subprocess pipe and store it in a container list.
### `run_shell_process`
```python theme={null}
run_shell_process(command: str, log_output: bool = True, stream_stdout: bool = False, log_stderr: bool = False, popen_kwargs: Optional[dict[str, Any]] = None)
```
Execute a shell command and log its output.
Designed for use within Prefect flows to run shell commands as part of
task execution.
**Args:**
* `command`: The shell command to execute.
* `log_output`: If True, log stdout/stderr to Prefect logs.
* `stream_stdout`: If True, stream stdout to Prefect logs.
* `log_stderr`: If True, log stderr to Prefect logs.
* `popen_kwargs`: Additional keyword arguments for subprocess.Popen.
### `watch`
```python theme={null}
watch(command: str)
```
Execute a shell command and observe it as a Prefect flow.
### `serve`
```python theme={null}
serve(command: str)
```
Create and serve a deployment that runs a shell command.
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