service account list
$ gcloud iam service-accounts list
list of participants in the roles for the project
$ gcloud projects get-iam-policy [project]
add / influence user in role
$ gcloud projects add-iam-policy-binding [project] \ --member="user: name@gmail.com " \ --role="roles/iam.serviceAccountUser"
Delete user:
$ gcloud projects remove-iam-policy-binding [project] \ --member="user: name@gmail.com " \ --role="roles/iam.serviceAccountUser"
add / influence google group in role
$ gcloud projects add-iam-policy-binding [project] \ --member="group: my_group@googlegroups.com " \ --role="roles/storage.admin"
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