$ curl cheat.sh/
 cheat:kubectl 
# To display list of all available commands:
kubectl -h

# To display an explanation of a specific command:
kubectl command_name -h

# To display complete list of supported resources:
kubectl api-resources

# To display an explanation of a specific resource:
kubectl explain resource_name

# To display an explanation of a specific field of resource:
kubectl explain resource_name.field_name

# To display list of global command-line options:
kubectl options

# To set up `kubectl` autocomplete in bash (press Tab to use):
source <(kubectl completion bash)

# To display all resources in all namespaces:
kubectl get all -A

# To order events by `creationTimestamp`:
kubectl get events --sort-by='.metadata.creationTimestamp'

 tldr:kubectl 
# kubectl
# Command-line interface for running commands against Kubernetes clusters.
# Some subcommands such as `kubectl run` have their own usage documentation.
# More information: <https://kubernetes.io/docs/reference/kubectl/>.

# List information about a resource with more details:
kubectl get pod|service|deployment|ingress|... -o wide

# Update specified pod with the label 'unhealthy' and the value 'true':
kubectl label pods name unhealthy=true

# List all resources with different types:
kubectl get all

# Display resource (CPU/Memory/Storage) usage of nodes or pods:
kubectl top pod|node

# Print the address of the master and cluster services:
kubectl cluster-info

# Display an explanation of a specific field:
kubectl explain pods.spec.containers

# Print the logs for a container in a pod or specified resource:
kubectl logs pod_name

# Run command in an existing pod:
kubectl exec pod_name -- ls /

$
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