# GitHub CLI

`gh` is GitHub on the command line. It brings pull requests, issues, and other GitHub concepts to the terminal next to where you are already working with `git` and your code.

![screenshot of gh pr status](https://user-images.githubusercontent.com/98482/84171218-327e7a80-aa40-11ea-8cd1-5177fc2d0e72.png)

GitHub CLI is supported for users on GitHub.com, GitHub Enterprise Cloud, and GitHub Enterprise Server 2.20+ with support for macOS, Windows, and Linux.

## Documentation

For [installation options see below](#installation), for usage instructions [see the manual](https://cli.github.com/manual/).

## Contributing

If anything feels off or if you feel that some functionality is missing, please check out the [contributing page](.github/CONTRIBUTING.md). There you will find instructions for sharing your feedback, building the tool locally, and submitting pull requests to the project.

If you are a hubber and are interested in shipping new commands for the CLI, check out our [doc on internal contributions](docs/working-with-us.md)

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## Installation

### [macOS](docs/install_macos.md)

- [Homebrew](docs/install_macos.md#homebrew)
- [Precompiled binaries](docs/install_macos.md#precompiled-binaries) on [releases page][]

For additional macOS packages and installers, see [community-supported docs](docs/install_macos.md#community-unofficial)

### [Linux & Unix](docs/install_linux.md)

- [Debian, Raspberry Pi, Ubuntu](docs/install_linux.md#debian)
- [Amazon Linux, CentOS, Fedora, openSUSE, RHEL, SUSE](docs/install_linux.md#rpm)
- [Precompiled binaries](docs/install_linux.md#precompiled-binaries) on [releases page][]

For additional Linux & Unix packages and installers, see [community-supported docs](docs/install_linux.md#community-unofficial)

### [Windows](docs/install_windows.md)

- [WinGet](docs/install_windows.md#winget)
- [Precompiled binaries](docs/install_windows.md#precompiled-binaries) on [releases page][]

For additional Windows packages and installers, see [community-supported docs](docs/install_windows.md#community-unofficial)

### Build from source

See here on how to [build GitHub CLI from source](docs/install_source.md).

### GitHub Codespaces

To add GitHub CLI to your codespace, add the following to your [devcontainer file](https://docs.github.com/en/codespaces/setting-up-your-project-for-codespaces/adding-features-to-a-devcontainer-file):

```json
"features": {
  "ghcr.io/devcontainers/features/github-cli:1": {}
}
```

### GitHub Actions

[GitHub-hosted runners](https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners) have the GitHub CLI pre-installed, which is updated weekly.

If a specific version is needed, your GitHub Actions workflow will need to install it based on the [macOS](#macos), [Linux & Unix](#linux--unix), or [Windows](#windows) instructions above.

For information on all pre-installed tools, see [`actions/runner-images`](https://github.com/actions/runner-images)

### Verification of binaries

Starting with v2.93.0, releases of `gh` are published as immutable releases. For more information, see [Immutable releases](https://docs.github.com/en/code-security/concepts/supply-chain-security/immutable-releases).

Since version 2.50.0, `gh` has been producing [Build Provenance Attestation](https://github.blog/changelog/2024-06-25-artifact-attestations-is-generally-available/), enabling a cryptographically verifiable paper-trail back to the origin GitHub repository, git revision, and build instructions used. The build provenance attestations are signed and rely on Public Good [Sigstore](https://www.sigstore.dev/) for PKI.

There are two common ways to verify a downloaded release, depending on whether `gh` is already installed or not. If `gh` is installed, it's trivial to verify a new release:

- **Option 1: Using `gh` if already installed:**

  ```shell
  $ gh at verify -R cli/cli gh_2.62.0_macOS_arm64.zip
  Loaded digest sha256:fdb77f31b8a6dd23c3fd858758d692a45f7fc76383e37d475bdcae038df92afc for file://gh_2.62.0_macOS_arm64.zip
  Loaded 1 attestation from GitHub API
  ✓ Verification succeeded!

  sha256:fdb77f31b8a6dd23c3fd858758d692a45f7fc76383e37d475bdcae038df92afc was attested by:
  REPO     PREDICATE_TYPE                  WORKFLOW
  cli/cli  https://slsa.dev/provenance/v1  .github/workflows/deployment.yml@refs/heads/trunk
  ```

- **Option 2: Using Sigstore [`cosign`](https://github.com/sigstore/cosign):**

  To perform this, download the [attestation](https://github.com/cli/cli/attestations) for the downloaded release and use cosign to verify the authenticity of the downloaded release:

  ```shell
  $ cosign verify-blob-attestation --bundle cli-cli-attestation-3120304.sigstore.json \
        --new-bundle-format \
        --certificate-oidc-issuer="https://token.actions.githubusercontent.com" \
        --certificate-identity="https://github.com/cli/cli/.github/workflows/deployment.yml@refs/heads/trunk" \
        gh_2.62.0_macOS_arm64.zip
  Verified OK
  ```

## Comparison with hub

For many years, [hub](https://github.com/github/hub) was the unofficial GitHub CLI tool. `gh` is a new project that helps us explore
what an official GitHub CLI tool can look like with a fundamentally different design. While both
tools bring GitHub to the terminal, `hub` behaves as a proxy to `git`, and `gh` is a standalone
tool. Check out our [more detailed explanation](docs/gh-vs-hub.md) to learn more.

[releases page]: https://github.com/cli/cli/releases/latest
