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2.11.2. Finding a Subsystem

To find the subsystems that are available in your kernel and how are they mounted together to hierarchies, run:
~]$ cat /proc/cgroups
Or, to find the mount points of particular subsystems, run:
~]$ lssubsys -m subsystems
where subsystems is a list of the subsystems in which you are interested. Note that the lssubsys -m command returns only the top-level mount point per each hierarchy.