To renew all certs
kubectl cert-manager renew --all -n <namespace>
Get all resources at once
kubectl get <resource_name> | awk '{print $1}' | grep -vi name | xargs -I{} sh -c 'kubectl get <resource_name> {} -o yaml > {}.yaml'
kubectl get deployments | awk '{print $1}' | grep -vi name | xargs -I{} sh -c 'kubectl get deployment {} -o yaml > {}.yaml'
Apply all resources in a directory
kubectl apply -f .
kubectl apply -f <directory> --recursive