userx@slack.current.ed:~/Downloads
$ sudo ./VirtualBox-6.0.6-130049-Linux_amd64.run
Verifying archive integrity... All good.
Uncompressing VirtualBox for Linux installation.............
VirtualBox Version 6.0.6 r130049 (2019-04-16T10:15:36Z) installer
Installing VirtualBox to /opt/VirtualBox
Python found: python, installing bindings...
depmod: WARNING: could not open modules.order at /lib/modules/4.19.36: No such file or directory
depmod: WARNING: could not open modules.builtin at /lib/modules/4.19.36: No such file or directory

VirtualBox has been installed successfully.

You will find useful information about using VirtualBox in the user manual
  /opt/VirtualBox/UserManual.pdf
and in the user FAQ
  http://www.virtualbox.org/wiki/User_FAQ

We hope that you enjoy using VirtualBox.

$ sudo /etc/rc.d/rc.bluetooth
Usage: /etc/rc.d/rc.bluetooth {start|stop|restart}
userx@slack.current.ed:~
$ sudo /etc/rc.d/rc.bluetooth restart

userx@slack.current.ed:~
$ blueman-applet
blueman-applet version 2.0.8 starting
_________
Load (/usr/lib64/python3.7/site-packages/blueman/main/PluginManager.py:60)
['ShowConnected', 'Headset', 'Networking', 'AuthAgent', 'NetUsage', 'NMPANSupport', 'DhcpClient', 'Menu', 'ExitItem', 'KillSwitch', 'DBusService', 'SerialManager', 'NMDUNSupport', 'TransferService', 'PowerManager', 'PPPSupport', 'RecentConns', 'GameControllerWakelock', 'DiscvManager', 'StatusIcon', 'StandardItems'] 
Traceback (most recent call last):
  File "/usr/lib64/python3.7/site-packages/dbus/bus.py", line 175, in activate_name_owner
    return self.get_name_owner(bus_name)
  File "/usr/lib64/python3.7/site-packages/dbus/bus.py", line 361, in get_name_owner
    's', (bus_name,), **keywords)
  File "/usr/lib64/python3.7/site-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name 'org.bluez': no such name

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/blueman-applet", line 121, in <module>
    BluemanApplet()
  File "/usr/bin/blueman-applet", line 63, in __init__
    self.Plugins.Load()
  File "/usr/lib64/python3.7/site-packages/blueman/main/PluginManager.py", line 90, in Load
    __import__(self.module_path.__name__ + ".%s" % plugin, None, None, [])
  File "/usr/lib64/python3.7/site-packages/blueman/plugins/applet/AuthAgent.py", line 9, in <module>
    import blueman.main.applet.BluezAgent as BluezAgent
  File "/usr/lib64/python3.7/site-packages/blueman/main/applet/BluezAgent.py", line 23, in <module>
    from blueman.bluez.Agent import Agent, AgentMethod
  File "/usr/lib64/python3.7/site-packages/blueman/bluez/Agent.py", line 48, in <module>
    class Agent(dbus.service.Object):
  File "/usr/lib64/python3.7/site-packages/blueman/bluez/Agent.py", line 56, in Agent
    @AgentMethod
  File "/usr/lib64/python3.7/site-packages/blueman/bluez/Agent.py", line 38, in AgentMethod
    if BlueZInterface.get_interface_version()[0] < 5:
  File "/usr/lib64/python3.7/site-packages/blueman/bluez/BlueZInterface.py", line 16, in get_interface_version
    obj = dbus.SystemBus().get_object('org.bluez', '/')
  File "/usr/lib64/python3.7/site-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib64/python3.7/site-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib64/python3.7/site-packages/dbus/bus.py", line 180, in activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib64/python3.7/site-packages/dbus/bus.py", line 278, in start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib64/python3.7/site-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name org.bluez was not provided by any .service files