> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Environment Variable

Gets the value of an environment variable.

### Inputs

| Name     | Type                                                                   | Description                                                                                                                                                     |
| -------- | ---------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Name     | [Text](../../../../block-documentation/types/text)                     | The name of the environment variable.                                                                                                                           |
| Required | [Bool](../../../../block-documentation/types/bool)                     | Raise an error if the specified environment variable is not set. If unchecked, an unset environment variable returns an empty Text object and raises a warning. |
| Rerun    | [List Interface](../../../../block-documentation/types/list-interface) | The block reruns when this input changes. To ensure the block reruns any time a notebook input changes, pass in a Group of all notebook inputs.                 |

### Outputs

| Type                                               |
| -------------------------------------------------- |
| [Text](../../../../block-documentation/types/text) |