Create a Kubenetes namespace using a file

gistfile1.txt

in JSON:

{
  "kind": "Namespace",
  "apiVersion": "v1",
  "metadata": {
    "name": "test",
    "labels": {
      "name": "test"
    }
  }
}

or YAML:

kind: Namespace
apiVersion: v1
metadata:
  name: test
  labels:
    name: test

Need to be careful with the spacing or nothing will work.