## `stdin` operator

The `stdin` generates entries from lines written to stdin.

### Configuration Fields

| Field             | Default          | Description                                                                                      |
| ---               | ---              | ---                                                                                              |
| `id`              | `generate_input` | A unique identifier for the operator                                                             |
| `output`          | Next in pipeline | The connected operator(s) that will receive all outbound entries                                 |
| `write_to`        | $                | A [field](/docs/types/field.md) that will be set to the path of the file the entry was read from |

### Example Configurations

#### Mock a file input

Configuration:
```yaml
- type: stdin
```

Command:
```bash
echo "test" | stanza -c ./config.yaml
```

Output records:
```json
{
  "timestamp": "2020-11-10T11:09:56.505467-05:00",
  "severity": 0,
  "record": "test"
}
```