get help on any kubectl command

 kubectl cp --help
 Copy files and directories to and from containers.
 Examples:
 # !!!Important Note!!!
 # Requires that the 'tar' binary is present in your container
 # image.  If 'tar' is not present, 'kubectl cp' will fail.

 # Copy /tmp/foo_dir local directory to /tmp/bar_dir in a remote pod in the default namespace
 kubectl cp /tmp/foo_dir <some-pod>:/tmp/bar_dir

 # Copy /tmp/foo local file to /tmp/bar in a remote pod in a specific container
 kubectl cp /tmp/foo <some-pod>:/tmp/bar -c <specific-container>

 # Copy /tmp/foo local file to /tmp/bar in a remote pod in namespace <some-namespace>
 kubectl cp /tmp/foo <some-namespace>/<some-pod>:/tmp/bar

 # Copy /tmp/foo from a remote pod to /tmp/bar locally
 kubectl cp <some-namespace>/<some-pod>:/tmp/foo /tmp/bar

 Options:
 -c, --container='': Container name. If omitted, the first container in the pod will be chosen

 Usage:
 kubectl cp <file-spec-src> <file-spec-dest> [options]

 Use "kubectl options" for a list of global command-line options (applies to all commands).