Control group /:
-.slice
|-user.slice 
| `-user-500.slice 
|   |-user@500.service ...
|   | |-session.slice 
|   | | |-pulseaudio.service 
|   | | | `- 2796 /usr/bin/pulseaudio --daemonize=no --log-target=journal
|   | | |-vte-spawn-0efe4794-b9fc-4718-b337-52aaa9b298dd.scope 
|   | | | |- 3506 bash
|   | | | |- 3535 su -
|   | | | |- 3541 -bash
|   | | | |- 5203 -bash
|   | | | |- 5508 dbus-launch --exit-with-session /usr/bin/mate-session --ver...
|   | | | |- 5509 /bin/dbus-daemon --syslog --fork --print-pid 5 --print-addr...
|   | | | |- 7555 /usr/bin/python2.7 /usr/sbin/sosreport
|   | | | |- 7703 timeout 300s systemd-cgls
|   | | | `- 7704 systemd-cgls
|   | | `-dbus.service 
|   | |   |- 2804 /bin/dbus-daemon --session --address=systemd: --nofork --no...
|   | |   |- 2979 /usr/libexec/goa-daemon
|   | |   |- 2991 /usr/libexec/goa-identity-service
|   | |   |- 3006 mate-menu
|   | |   `- 3464 mate-terminal
|   | |-app.slice 
|   | | |-gvfs-goa-volume-monitor.service 
|   | | | `- 2975 /usr/libexec/gvfs/gvfs-goa-volume-monitor
|   | | |-dconf.service 
|   | | | `- 2929 /usr/libexec/dconf-service
|   | | |-gvfs-daemon.service 
|   | | | |- 2895 /usr/libexec/gvfs/gvfsd
|   | | | |- 2900 /usr/libexec/gvfs/gvfsd-fuse /run/user/500/gvfs -f
|   | | | |- 3090 /usr/libexec/gvfs/gvfsd-trash --spawner :1.4 /org/gtk/gvfs/...
|   | | | |- 3197 /usr/libexec/gvfs/gvfsd-network --spawner :1.4 /org/gtk/gvf...
|   | | | `- 3214 /usr/libexec/gvfs/gvfsd-dnssd --spawner :1.4 /org/gtk/gvfs/...
|   | | |-gvfs-udisks2-volume-monitor.service 
|   | | | `- 2966 /usr/libexec/gvfs/gvfs-udisks2-volume-monitor
|   | | |-gvfs-gphoto2-volume-monitor.service 
|   | | | `- 3003 /usr/libexec/gvfs/gvfs-gphoto2-volume-monitor
|   | | |-obex.service 
|   | | | `- 3107 /usr/libexec/bluetooth/obexd
|   | | |-at-spi-dbus-bus.service 
|   | | | |- 2906 /usr/libexec/at-spi-bus-launcher
|   | | | |- 2912 /bin/dbus-daemon --config-file=/usr/share/defaults/at-spi2/...
|   | | | `- 2937 /usr/libexec/at-spi2-registryd --use-gnome-session
|   | | |-gvfs-metadata.service 
|   | | | `- 3143 /usr/libexec/gvfs/gvfsd-metadata
|   | | |-gvfs-mtp-volume-monitor.service 
|   | | | `- 2971 /usr/libexec/gvfs/gvfs-mtp-volume-monitor
|   | | `-gvfs-afc-volume-monitor.service 
|   | |   `- 2997 /usr/libexec/gvfs/gvfs-afc-volume-monitor
|   | `-init.scope 
|   |   |- 2787 /lib/systemd/systemd --user
|   |   `- 2789 (sd-pam)
|   |-session-3.scope 
|   | |- 2770 lightdm --session-child 12 19
|   | |- 2800 /usr/bin/gnome-keyring-daemon --daemonize --login
|   | |- 2803 /usr/bin/mate-session
|   | |- 2847 ssh-agent -u
|   | |- 2935 /usr/libexec/mate-settings-daemon
|   | |- 2950 marco
|   | |- 2962 mate-panel
|   | |- 2992 /usr/bin/caja
|   | |- 3013 mate-screensaver
|   | |- 3014 parcellite
|   | |- 3015 mate-volume-control-status-icon
|   | |- 3018 blueberry-tray
|   | |- 3026 nm-applet
|   | |- 3037 /usr/libexec/polkit-mate-authentication-agent-1
|   | |- 3043 apt-indicator --autostarted
|   | |- 3044 /usr/bin/python3 /usr/share/system-config-printer/applet.py
|   | |- 3049 blueberry-obex-agent
|   | |- 3052 mate-power-manager
|   | |- 3116 /bin/sh /usr/share/blueberry/safechild /usr/sbin/rfkill event
|   | `- 3118 /usr/sbin/rfkill event
|   `-session-5.scope 
|     |- 4713 sshd: test [priv]
|     |- 4718 sshd: test@pts/1
|     |- 4719 -bash
|     |- 4756 su -
|     `- 4760 -bash
|-init.scope 
| `- 1 /sbin/init splash
`-system.slice 
  |-nmb.service 
  | `- 3145 /usr/sbin/nmbd --foreground --no-process-group
  |-systemd-udevd.service 
  | |- 2045 /lib/systemd/systemd-udevd
  | |- 7625 (udev-worker)
  | |- 7652 (udev-worker)
  | |- 7653 (udev-worker)
  | `- 7654 (udev-worker)
  |-polkit.service 
  | `- 2302 /usr/libexec/polkit-1/polkitd --no-debug
  |-chronyd.service 
  | `- 3421 /usr/sbin/chronyd
  |-bluetooth.service 
  | `- 2283 /usr/libexec/bluetooth/bluetoothd
  |-accounts-daemon.service 
  | `- 2278 /usr/libexec/accounts-daemon
  |-wpa_supplicant.service 
  | `- 2582 /usr/sbin/wpa_supplicant -u
  |-lightdm.service 
  | |- 2673 /usr/sbin/lightdm
  | `- 2681 X -nolisten tcp :0 -seat seat0 -auth /run/lightdm/root/:0 -nolist...
  |-ModemManager.service 
  | `- 2419 /usr/sbin/ModemManager
  |-systemd-journald.service 
  | `- 2014 /lib/systemd/systemd-journald
  |-sshd.service 
  | `- 3626 /usr/sbin/sshd -D
  |-crond.service 
  | `- 2445 /usr/sbin/crond -n
  |-colord.service 
  | `- 2469 /usr/libexec/colord
  |-NetworkManager.service 
  | `- 2429 /usr/sbin/NetworkManager --no-daemon
  |-cups-browsed.service 
  | `- 3144 /usr/sbin/cups-browsed
  |-cups.service 
  | |- 2441 /usr/sbin/cupsd -l
  | `- 3459 /usr/lib/cups/notifier/dbus dbus://
  |-pcscd.service 
  | `- 3058 /usr/sbin/pcscd --foreground --auto-exit
  |-smb.service 
  | |- 3441 /usr/sbin/smbd --foreground --no-process-group
  | |- 3443 /usr/sbin/smbd --foreground --no-process-group
  | `- 3444 /usr/sbin/smbd --foreground --no-process-group
  |-upower.service 
  | `- 2308 /usr/libexec/upower/upowerd
  |-alteratord.service 
  | `- 2280 /usr/bin/guile --no-auto-compile /usr/sbin/alteratord
  |-udisks2.service 
  | `- 2307 /usr/libexec/udisks2/udisksd
  |-dbus.service 
  | `- 2299 /bin/dbus-daemon --system --address=systemd: --nofork --nopidfile...
  |-avahi-daemon.service 
  | |- 2282 avahi-daemon: running [AquariusCMP-NS483.local]
  | `- 2315 avahi-daemon: chroot helper
  `-systemd-logind.service 
    `- 2306 /lib/systemd/systemd-logind
