Usage: kdestroy [-Ah] [--credential=principal] [--cache=cache] [-c cache] [--all] [--no-unlog]
   [--no-delete-v4] [--version] [--help]
--credential=principal  remove one credential
-c cache, --cache=cache cache to destroy
-A, --all               destroy all caches
--no-unlog              do not destroy tokens
--no-delete-v4          do not destroy v4 tickets