I would like to see all resources in a namespace.
Doing kubectl get all will, despite of the name, not list things like services and ingresses.
This may not get all resources but it may be what someone is looking for
kubectl get all,cm,secret,ing -A
This seems to get most of the resources, prefixed with the type.
At least, it gets:
This doesn't get custom resources but does get services.
Else this does something similar:
for i in `kubectl api-resources | awk '{print $1}'` do ; kubectl get $i
Running v1.13