Linux
$ mkdir actions-runner && cd actions-runner
$ curl -O -L https://github.com/actions/runner/releases/download/sample/actions-runner-linux-x64-2.159.2.tar.gz
$ tar xzf ./actions-runner-linux-x64-2.159.2.tar.gz
See the Settings, Actions, Add Runner dialog for configuration and token.
MacOS
$ mkdir actions-runner && cd actions-runner
$ curl -O -L https://github.com/actions/runner/releases/download/sample/actions-runner-osx-x64-2.159.2.tar.gz
$ tar xzf ./actions-runner-linux-x64-2.159.2.tar.gz
See the Settings, Actions, Add Runner dialog for configuration and token.