$ rugged initialize-partial-root-metadata --help
Usage: rugged initialize-partial-root-metadata [OPTIONS]
Initialize a new Root metadata.
Options:
--help Show this message and exit.
$ rugged initialize-partial-root-metadata
Initializing partial root metadata at: /var/rugged/tuf_repo/partial/1.root.json
Partial root metadata path not found. Creating: /var/rugged/tuf_repo/partial