Cloud Shell

Google Cloud Shell is an interactive shell environment for Google Cloud Platform that makes it easy for you to learn and experiment with GCP and manage your projects and resources from your web browser.

Linux command line

https://linuxcommand.org/

Tutorials

Getting started with Cloud Shell

https://rominirani.com/google-cloud-shell-resources-to-get-started-ed02a78a5579

Run Code samples directly in Cloud Shell

https://cloud.google.com/blog/topics/developers-practitioners/run-code-samples-directly-google-cloud-documentation