The "docky" application is started by "docky --version" input.

Ubuntu 18.04 LTS (Japanese environment)

Docky version: 2.2.1.1 Release
Kernel version: 4.15.0.20

[Procedure to reoccur]

1. I entered the following in the "terminal" application. Install "docky" application.

$ sudo apt update
$ sudo apt install docky

2. I entered the following in the "terminal" application.
I checked that installation was successful after installation.

$ docky --version

3. There was a version indication. After that, the message was displayed for a long time. So I thought it was an error message.

$ docky --version
[Info 14:47:47.043] Docky version: 2.2.1.1 Release
[Info 14:47:47.063] Kernel version: 4.15.0.20
[Info 14:47:47.064] CLR version: 4.0.30319.42000
[Info 14:47:47.111] [Gtk] Failed to load module "canberra-gtk-module"
[Error 14:47:47.451] [SystemService] Could not initialize power manager dbus: 'Could not load type 'Docky.Services.SystemService\+IUPowerProxy' from assembly 'DBus.Proxies, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' because it is implements the inaccessible interface 'Docky.Services.SystemService+IUPower'.'
[Info 14:47:47.463] [SystemService] at System.Reflection.Emit.TypeBuilder.CreateTypeInfo () [0x002dc] in <8f2c484307284b51944a1a13a14c0266>:0
  at System.Reflection.Emit.TypeBuilder.CreateType () [0x00000] in <8f2c484307284b51944a1a13a14c0266>:0
  at DBus.TypeImplementer.GetImplementation (System.Type declType) [0x000e3] in <91cfe10d2aa049c9af550645dbbec075>:0
  at DBus.BusObject.GetObject (DBus.Connection conn, System.String bus_name, DBus.ObjectPath object_path, System.Type declType) [0x00001] in <91cfe10d2aa049c9af550645dbbec075>:0
  at DBus.Connection.GetObject (System.Type type, System.String bus_name, DBus.ObjectPath path) [0x0002b] in <91cfe10d2aa049c9af550645dbbec075>:0
  at DBus.Connection.GetObject[T] (System.String bus_name, DBus.ObjectPath path) [0x00001] in <91cfe10d2aa049c9af550645dbbec075>:0
  at Docky.Services.SystemService.InitializeBattery () [0x00030] in <7cbfebdf01bd437fb1e0b3e770f0dbae>:0
[Error 14:47:47.473] [SystemService] Could not initialize Network Manager dbus: 'Could not load type 'Docky.Services.SystemService\+INetworkManagerProxy' from assembly 'DBus.Proxies, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' because it is implements the inaccessible interface 'Docky.Services.SystemService+INetworkManager'.'
[Info 14:47:47.474] [SystemService] at System.Reflection.Emit.TypeBuilder.CreateTypeInfo () [0x002dc] in <8f2c484307284b51944a1a13a14c0266>:0
  at System.Reflection.Emit.TypeBuilder.CreateType () [0x00000] in <8f2c484307284b51944a1a13a14c0266>:0
  at DBus.TypeImplementer.GetImplementation (System.Type declType) [0x000e3] in <91cfe10d2aa049c9af550645dbbec075>:0
  at DBus.BusObject.GetObject (DBus.Connection conn, System.String bus_name, DBus.ObjectPath object_path, System.Type declType) [0x00001] in <91cfe10d2aa049c9af550645dbbec075>:0
  at DBus.Connection.GetObject (System.Type type, System.String bus_name, DBus.ObjectPath path) [0x0002b] in <91cfe10d2aa049c9af550645dbbec075>:0
  at DBus.Connection.GetObject[T] (System.String bus_name, DBus.ObjectPath path) [0x00001] in <91cfe10d2aa049c9af550645dbbec075>:0
  at Docky.Services.SystemService.InitializeNetworkManager () [0x0005c] in <7cbfebdf01bd437fb1e0b3e770f0dbae>:0
[Info 14:47:47.495] [ThemeService] Setting theme: Classic
[Warn 14:47:47.523] [DesktopItemService] Could not find remap file '/home/ubn/.local/share/docky/remaps.ini'!
[Info 14:47:47.667] [DockServices] Dock services initialized.
[Info 14:47:48.028] [PluginManager] Loaded "Trash".
Cairo.Surface is leaking, programmer is missing a call to Dispose
Set MONO_CAIRO_DEBUG_DISPOSE to track allocation traces

4. After that, you can no longer enter in the "terminal" application.
I thought that the "docky" application stalled.
So, I thought the installation did not succeed.

5. This was a misunderstanding. I did not expect that "docky" will start when I check the version.

---

[Things I think]

Immediately after installing the application, I'd like to display "version" and "help" in the "terminal" application to see if the installation was successful.

The problem is that the application does what the operator did not think.

I think that it is desirable to terminate the application after displaying any of the following when an unsupported parameter is entered.

- Display help.
- "The parameter can not be used" is displayed.
- Nothing is displayed.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: docky 2.2.1.1-1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat May 5 15:31:55 2018
InstallationDate: Installed on 2018-05-04 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ja_JP.UTF-8
 SHELL=/bin/bash
SourcePackage: docky
UpgradeStatus: No upgrade log present (probably fresh install)