lssubsys (1) Linux Manual Page
lssubsys – list hierarchies containing given subsystem
Synopsis
lssubsys [-m|–mount-points] [-M|–all-mount-points] [controller] […]lssubsys [-m|–mount-points] [-M|–all-mount-points] [-i|–hierarchies] [-a|–all]
lssubsys [-h|–help]
Description
lssubsys list the hierarchies containing the given subsystem(s). If no subsystem is defined, it displays all mounted hierarchies.- controller
- defines the subsystem whose hierarchy is shown. If this parameter is not used, the command will list all mounted subsystems.
- -m, –mount-points
- Display mount points. Only the first mount points of shown hierarchies are displayed.
- -M, –all-mount-points
- Display mount points. All mount points of shown hierarchies are displayed, each on separate line.
- -a, –all
- Display all subsystems (including unmounted ones).
- -i, –hierarchies
- Display the attached hierarchy number if the subsystem is in a hierarchy. If the option -m is also used, the hierarchy number is shown only for unmounted hierarchies.
- -h, –help
- Display help and exit.
Example
The command lssubsys -am lists all subsystems which are present in the system, mounted ones will be shown with their mount point:$ lssubsys -am
ns
cpuset
cpu,devices
cpuacct /cgroup/cpuacct
memory /cgroup/memory
freezer /cgroup/freezer
net_cls /cgroup/net_cls
The command lssubsys -ami lists all subsystems which are present in the system, mounted subsystems are listed with their mount points, unmounted ones which are in a hierarchy are listed with their hierarchy number:
$ lssubsys -ami
ns
cpuset 5
cpu,devices 6
cpuacct /cgroup/cpuacct
memory /cgroup/memory
freezer /cgroup/freezer
net_cls /cgroup/net_cls
Environment Variables
- CGROUP_LOGLEVEL
- controls verbosity of the tool. Allowed values are DEBUG, INFO, WARNING or ERROR.