How to install Virtualbox 5.2.18 Released on Ubuntu 18.04

  VirtualBox  is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2.

Virtualbox 5.2.18 Changelog:

• VMM: See user manual.
• VMM: fix loading with recent binutils and self-built versions of VirtualBox
• NAT: fix --nataliasmode sameports which is a valid setting
• VRDP: fixed VM process termination on RDP client disconnect if 3D is enabled for the virtual machine  

Installation instructions:
 
1. Open terminal via Ctrl+Alt+T or from application launcher. Remove old Virtualbox via command:

$ sudo apt-get remove --autoremove virtualbox virtualbox-5.1

2. Add the repository via command:

$ sudo sh -c 'echo "deb http://download.virtualbox.org/virtualbox/debian $(lsb_release -sc) contrib" >> /etc/apt/sources.list.d/virtualbox.list'

For Linux Mint, replace $(lsb_release -sc) in the code with the Ubuntu codename that your system depends on.

3. Download and install the repository key via command:

$ wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add - $ wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | sudo apt-key add -

4. Running command update and install:

$ sudo apt-get update $ sudo apt-get install virtualbox-5.2

Once installed, open the Virtualbox from Ubuntu Dash.

(Optional) To remove Virtualbox 5.2, use command:

$ sudo apt-get remove --autoremove virtualbox virtualbox-5.2