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https://github.com/FranzDiebold/github-env-vars-action

:octocat: 🚀 GitHub Action for Environment Variables
https://github.com/FranzDiebold/github-env-vars-action

cicd deployment environment-variables github-action github-actions slug workflow

Last synced: about 2 months ago
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:octocat: 🚀 GitHub Action for Environment Variables

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# :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: v2.8.0](https://img.shields.io/badge/Version-v2.8.0-brightgreen)](https://github.com/FranzDiebold/github-env-vars-action/releases/tag/v2.8.0)

[![Lint and Test](https://github.com/FranzDiebold/github-env-vars-action/workflows/Lint%20and%20Test/badge.svg)](https://github.com/FranzDiebold/github-env-vars-action/actions?query=workflow%3A%22Lint+and+Test%22)

[![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                          |

|--------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------|

| `CI_REPOSITORY_SLUG`       | The slug of the owner and repository name (i.e. slug of `FranzDiebold/github-env-vars-action`). The slug is truncated to 63 characters.                        | `franzdiebold-github-env-vars-action`      |

| `CI_REPOSITORY_OWNER`      | The owner of the repository.                                                                                                                                   | `FranzDiebold`                             |

| `CI_REPOSITORY_OWNER_SLUG` | The slug of the owner of the repository. The slug is truncated to 63 characters.                                                                               | `franzdiebold`                             |

| `CI_REPOSITORY_NAME`       | The name of the repository.                                                                                                                                    | `github-env-vars-action`                   |

| `CI_REPOSITORY_NAME_SLUG`  | The slug of the name of the repository. The slug is truncated to 63 characters.                                                                                | `github-env-vars-action`                   |

| `CI_REPOSITORY`            | The owner and repository name. Copy of `GITHUB_REPOSITORY` - for reasons of completeness.                                                                      | `FranzDiebold/github-env-vars-action`      |

| `CI_REF_SLUG`              | The slug of the branch, tag or PR number *ref* that triggered the workflow (i.e. slug of `refs/heads/feat/feature-branch-1`). 
If neither a branch, tag or PR number is available for the event type, the variable will not exist. The slug is truncated to 63 characters. | `refs-heads-feat-feature-branch-1` or
 `refs-tags-v1-3-7` or
 `refs-pull-42-merge` |

| `CI_ACTION_REF_NAME`       | The branch or tag *name* that triggered the workflow. For pull requests it is the *head* branch name.                                                          | `feat/feature-branch-1` or
 `v1.3.7`    |

| `CI_ACTION_REF_NAME_SLUG`  | The slug of the branch or tag *name* that triggered the workflow. For pull requests it is the slug of the *head* branch name. The slug is truncated to 63 characters. | `feat-feature-branch-1` or
 `v1-3-7`    |

| `CI_REF_NAME`              | The branch *name*, tag *name* or PR number that triggered the workflow. 
If neither a branch, tag or PR number is available for the event type, the variable will not exist. | `feat/feature-branch-1` or
 `v1.3.7` or
 `42/merge` |

| `CI_REF_NAME_SLUG`         | The slug of the branch *name*, tag *name* or PR number that triggered the workflow. 
If neither a branch, tag or PR number is available for the event type, the variable will not exist. The slug is truncated to 63 characters. | `feat-feature-branch-1` or
 `v1-3-7` or
 `42-merge` |

| `CI_REF`                   | The branch, tag or PR number *ref* that triggered the workflow. 
If neither a branch, tag or PR number is available for the event type, the variable will not exist. Copy of `GITHUB_REF` - for reasons of completeness. | `refs/heads/feat/feature-branch-1` or
 `refs/tags/v1.3.7` or
 `refs/pull/42/merge` |

| `CI_HEAD_REF_SLUG`         | The slug of the head branch *name*. 
Only set for event type *pull request* or forked repositories. The slug is truncated to 63 characters.                 | `feat-feature-branch-1`                    |

| `CI_HEAD_REF`              | Only set for forked repositories / pull request. The branch of the head repository / the head branch name. Copy of `GITHUB_HEAD_REF` - for reasons of completeness. | `feat/feature-branch-1`               |

| `CI_BASE_REF_SLUG`         | The slug of the base branch *name*. 
Only set for event type *pull request* or forked repositories. The slug is truncated to 63 characters.                 | `main`                                     |

| `CI_BASE_REF`              | Only set for forked repositories / pull request. The branch of the base repository / the base branch name. Copy of `GITHUB_BASE_REF` - for reasons of completeness. | `main`                                |

| `CI_SHA_SHORT`             | The shortened commit SHA (8 characters) that triggered the workflow.                                                                                           | `ffac537e`                                 |

| `CI_SHA`                   | The commit SHA that triggered the workflow. Copy of `GITHUB_SHA` - for reasons of completeness.                                                                | `ffac537e6cbbf934b08745a378932722df287a53` |

| `CI_PR_SHA_SHORT`          | The shortened latest commit SHA in the pull request's base branch. Short version of `CI_PR_SHA`. Only set for pull requests.                                   | `010b249`                                  |

| `CI_PR_SHA`                | The latest commit SHA in the pull request's base branch. Long version of `CI_PR_SHA_SHORT`. Only set for pull requests.                                        | `010b2491902d50e8623934f5bc43763ff5991642` |

| `CI_PR_NUMBER`             | The number of the pull request. Only set for pull requests.                                                                                                    | `42`                                       |

| `CI_PR_ID`                 | Copy of `CI_PR_NUMBER` for completeness.                                                                                                                       | `42`                                       |

| `CI_PR_TITLE`              | The title of the pull request. Only set for pull requests.                                                                                                     | `Add feature xyz.`                         |

| `CI_PR_DESCRIPTION`        | The description of the pull request. Only set for pull requests.                                                                                               | `The feature xyz is the [...]`             |

| `CI_ACTOR`                 | The name of the person or app that initiated the workflow. Copy of `GITHUB_ACTOR` - for reasons of completeness.                                               | `octocat`                                  |

| `CI_EVENT_NAME`            | The name of the webhook event that triggered the workflow. Copy of `GITHUB_EVENT_NAME` - for reasons of completeness.                                          | `push` or `pull_request`                   |

| `CI_RUN_ID`                | A unique number for each run within a repository. This number does not change if you re-run the workflow run. Copy of `GITHUB_RUN_ID` - for reasons of completeness. | `397746731`                          |

| `CI_RUN_NUMBER`            | A unique number for each run of a particular workflow in a repository. This number begins at 1 for the workflow's first run, and increments with each new run. This number does not change if you re-run the workflow run. Copy of `GITHUB_RUN_NUMBER` - for reasons of completeness. | `73` |

| `CI_WORKFLOW`              | The name of the workflow. Copy of `GITHUB_WORKFLOW` - for reasons of completeness.                                                                             | `Demo`                                     |

| `CI_ACTION`                | The unique identifier (`id`) of the action. Copy of `GITHUB_ACTION` - for reasons of completeness.                                                             | `run2`                                     |



> The [slugified](https://en.wikipedia.org/wiki/Clean_URL#Slug) values are designed to be used in a URL.



### Default Environment Variables exposed by GitHub



For a full list of default environment variables exposed by GitHub see [https://docs.github.com/en/free-pro-team@latest/actions/reference/environment-variables#default-environment-variables](https://docs.github.com/en/free-pro-team@latest/actions/reference/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`         |

| `GITHUB_HEAD_REF`         | Only set for forked repositories / pull request. The branch of the head repository / the head branch name.                                      | `feat/feature-branch-1`                    |

| `GITHUB_BASE_REF`         | Only set for forked repositories / pull request. The branch of the base repository / the base branch name.                                      | `main`                                     |

| `GITHUB_EVENT_NAME`       | The name of the webhook event that triggered the workflow.                                                                                      | `push`                                     |

| `GITHUB_RUN_ID`           | A unique number for each run within a repository. This number does not change if you re-run the workflow run.                                   | `397746731`                                |

| `GITHUB_RUN_NUMBER`       | A unique number for each run of a particular workflow in a repository. This number begins at 1 for the workflow's first run, and increments with each new run. This number does not change if you re-run the workflow run. | `73` |

| `GITHUB_WORKFLOW`         | The name of the workflow.                                                                                                                       | `Demo`                                     |

| `GITHUB_ACTION`           | The unique identifier (`id`) of the action.                                                                                                     | `run2`                                     |



## :rocket: Example usage



```yaml

steps:

  - uses: FranzDiebold/github-env-vars-action@v2

  - name: Print environment variables

    run: |

      echo "CI_REPOSITORY_SLUG=$CI_REPOSITORY_SLUG"

      echo "CI_REPOSITORY_OWNER=$CI_REPOSITORY_OWNER"

      echo "CI_REPOSITORY_OWNER_SLUG=$CI_REPOSITORY_OWNER_SLUG"

      echo "CI_REPOSITORY_NAME=$CI_REPOSITORY_NAME"

      echo "CI_REPOSITORY_NAME_SLUG=$CI_REPOSITORY_NAME_SLUG"

      echo "CI_REPOSITORY=$CI_REPOSITORY"

      echo "CI_REF_SLUG=$CI_REF_SLUG"

      echo "CI_ACTION_REF_NAME=$CI_ACTION_REF_NAME"

      echo "CI_ACTION_REF_NAME_SLUG=$CI_ACTION_REF_NAME_SLUG"

      echo "CI_REF_NAME=$CI_REF_NAME"

      echo "CI_REF_NAME_SLUG=$CI_REF_NAME_SLUG"

      echo "CI_REF=$CI_REF"

      echo "CI_HEAD_REF_SLUG=$CI_HEAD_REF_SLUG"

      echo "CI_HEAD_REF=$CI_HEAD_REF"

      echo "CI_BASE_REF_SLUG=$CI_BASE_REF_SLUG"

      echo "CI_BASE_REF=$CI_BASE_REF"

      echo "CI_SHA_SHORT=$CI_SHA_SHORT"

      echo "CI_SHA=$CI_SHA"

      echo "CI_PR_SHA_SHORT=$CI_PR_SHA_SHORT"

      echo "CI_PR_SHA=$CI_PR_SHA"

      echo "CI_PR_NUMBER=$CI_PR_NUMBER"

      echo "CI_PR_ID=$CI_PR_ID"

      echo "CI_PR_TITLE=$CI_PR_TITLE"

      echo "CI_PR_DESCRIPTION=$CI_PR_DESCRIPTION"

      echo "CI_ACTOR=$CI_ACTOR"

      echo "CI_EVENT_NAME=$CI_EVENT_NAME"

      echo "CI_RUN_ID=$CI_RUN_ID"

      echo "CI_RUN_NUMBER=$CI_RUN_NUMBER"

      echo "CI_WORKFLOW=$CI_WORKFLOW"

      echo "CI_ACTION=$CI_ACTION"

```



### 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)!