# :octocat: :rocket: GitHub Environment Variables Action

[![GitHub Action: View on Marketplace](https://img.shields.io/badge/GitHub%20Action-View_on_Marketplace-28a745?logo=github)](https://github.com/marketplace/actions/github-environment-variables-action)
[![Demo: available](https://img.shields.io/badge/Demo-available-orange)](.github/workflows/demo.yml)
[version](https://img.shields.io/github/package-json/v/FranzDiebold/github-env-vars-action/primary?label=version)
[![license: MIT](https://img.shields.io/badge/license-MIT-brightgreen.svg)](./LICENSE)

A [GitHub Action](https://github.com/features/actions) to expose useful environment variables.

### Environment Variables exposed by **this Action**

| Environment Variable Name | Description                                                                                                                           | Example value            |
|---------------------------|---------------------------------------------------------------------------------------------------------------------------------------|--------------------------|
| `GITHUB_REPOSITORY_OWNER` | The owner of the repository.                                                                                                          | `FranzDiebold`           |
| `GITHUB_REPOSITORY_NAME`  | The name of the repository.                                                                                                           | `github-env-vars-action` |
| `GITHUB_REF_NAME`         | The branch name that triggered the workflow. If neither a branch or tag is available for the event type, the variable will not exist. | `feat/feature-branch-1`  |
| `GITHUB_SHA_SHORT`        | The shortened commit SHA (8 characters) that triggered the workflow.                                                                  | `ffac537e`               |


### Default Environment Variables exposed by GitHub

For a full list of default environment variables exposed by GitHub see [https://help.github.com/en/actions/configuring-and-managing-workflows/using-environment-variables#default-environment-variables](https://help.github.com/en/actions/configuring-and-managing-workflows/using-environment-variables#default-environment-variables).

| Environment Variable Name | Description                                                                                                                                 | Example value                              |
|---------------------------|---------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------|
| `GITHUB_ACTOR`            | The name of the person or app that initiated the workflow.                                                                                  | `octocat`                                  |
| `GITHUB_REPOSITORY`       | The owner and repository name.                                                                                                              | `FranzDiebold/github-env-vars-action`      |
| `GITHUB_SHA`              | The commit SHA that triggered the workflow.                                                                                                 | `ffac537e6cbbf934b08745a378932722df287a53` |
| `GITHUB_REF`              | The branch or tag ref that triggered the workflow. If neither a branch or tag is available for the event type, the variable will not exist. | `refs/heads/feat/feature-branch-1`         |

## Example usage

```yaml
steps:
  - uses: franzdiebold/github-env-vars-action@v1.1.2
  - name: Print environment variables
    run: |
      echo "GITHUB_REPOSITORY_OWNER=$GITHUB_REPOSITORY_OWNER"
      echo "GITHUB_REPOSITORY_NAME=$GITHUB_REPOSITORY_NAME"
      echo "GITHUB_REF_NAME=$GITHUB_REF_NAME"
      echo "GITHUB_SHA_SHORT=$GITHUB_SHA_SHORT"
```

### Demo

A demo for all Operating systems (Linux, macOS and Windows) is also available in the [demo workflows file of this repository](.github/workflows/demo.yml)!