Usage: /usr/bin/lssubsys [-i] [-m] [-M] [controller] [...]
   or: /usr/bin/lssubsys [-a] [-i] [-m] [-M]
List information about given controller(s) If no controller is set list information about all mounted controllers.
  -a, --all			Display information about all controllers (including not mounted ones)
  -h, --help			Display this help
  -i, --hierarchies		Display information about hierarchies
  -m, --mount-points		Display mount points
  -M, --all-mount-points	Display all mount points
(Note: currently supported on cgroups v1 only)