Restoration of Missing Unity Launcher and Panels

Supposed to rush home for some errands after work but accidentally remove certain common library package in my Ubuntu desktop. In the end, the Unity launcher, panels, and status indicator were removed. Frustrated (this is the nth times), gave up, and went straight home. After replenished my glucose, googled around and tried again.

Steps to recover it in  Ubuntu 13.04.

1. Re-install the Ubuntu desktop.
$ sudo apt-get update
$ sudo apt-get install --reinstall ubuntu-desktop
$ sudo apt-get install unity

2. Logout from the command line, since the top panel was gone and no where I can find the logout menu item.
$ gnome-session-quit

3. Login again. But still, not Unity launcher or top panel to be seen. Reset the Compiz settings and whoala!
$ sudo dconf reset -f /org/compiz/
$ setsid unity

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