Snapctl --help

Usage:
  snapctl [OPTIONS] <command>

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

Available commands:
  get           The get command prints configuration and interface connection settings.
  is-connected  Return success if the given plug or slot is connected, and failure otherwise
  restart       Restart services
  services      Query the status of services
  set           Changes configuration options
  set-health    Report the health status of a snap
  start         Start services
  stop          Stop services
  unset         Remove configuration options

snapctl, snapctl services, snapctl --help