ubuntu@localhost:~$ snappy list
Name Date Version Developer 
ubuntu@localhost:~$ snap -h
error: Usage:
  snap [OPTIONS] <add-cap | list-caps | remove-cap>

Help Options:
  -h, --help  Show this help message

Available commands:
  add-cap     Add a capability to the system
  list-caps   List system capabilities
  remove-cap  Remove a capability from the system