Install the open-source Virtual Machine VirtualBox4.1.20 in Ubuntu

VirtualBox is a powerful x86, AMD64, and Intel64 virtualization product that can be used by enterprises and families for free. VirtualBox is a product with extremely rich functions and high performance. It provides the only professional solution for enterprise customers, open source software, free of charge, and is based on the GNU General Public License (GPL) version 2. Virtualbox4.1.20 updated: thisisamaintenancerelwing. Thefollowing

VirtualBox is a powerful x86, AMD64, and Intel64 virtualization product that can be used by enterprises and families for free. VirtualBox is a product with extremely rich functions and high performance. It provides the only professional solution for enterprise customers, open source software, free of charge, and is based on the GNU General Public License (GPL) version 2.

Virtualbox 4.1.20 updated:
This is a maintenance release. The following items were fixed and/or added:
VMM: fixed a crash under rare circumstances for VMs running without hardware virtualization alization
VMM: fixed a code analysis bug for certain displacement instructions for VMs running without hardware virtualization alization
VMM: fixed an interpretion bug for TPR read instructions under rare condition (AMD-V only)
Snapshots: fixed a crash when restoring an old snapshot when powering off a VM (bugs #9604, #10491)
VBoxSVC: be more tolerant against environment variables with strange encodings (bug #8780)
VGA: fixed wrong access check which might cause a crash under certain conditions
NAT: final fix for crashes under rare conditions (bug #10513)
Virtio-net: fixed the problem with fixing ing of GSO packets in Windows XP guests causing packet loss in host-to-VM transfers
HPET: several fixes (bugs #10170, #10306)
Clipboard: disable the clipboard by default for new VMs
BIOS: the pci bios was not properly detected with the chipset type set to ICH9 (bugs #9301, #10327)
Mac OS X hosts: adaptions to Mountain Lion
Linux Installer: fixes for Gentoo Linux (bug #10642)
Linux guests: fixed mouse integration on Fedora 17 guests (bug #2306)
Linux Additions: compile fixes for RHEL/CentOS 6.3 (bug #10756)
Linux Additions: compile fixes for Linux 3.5-rc1 and Linux 3.6-rc1 (bug #10709)
Solaris host: fixed a guru meditation while allocating large pages (bug #10600)
Solaris host: fixed possible kernel panics while freeing memory
Solaris Installer: fixed missing icon for menu and desktop shortcuts

Install VirtualBox 4.1.20 in Ubuntu 12.04:

Open the terminal and run the following command:

You need to edit/etc/apt/sources. list

Gksudo gedit/etc/apt/sources. list

Add the following address to the end:

Deb http://download.virtualbox.org/virtualbox/debian precise contrib

If you are using ubuntu 11.10, add the following address:

Deb http://download.virtualbox.org/virtualbox/debian oneiric contrib

Save the file and run the following command to install the PGP key:

Wget-q http://download.virtualbox.org/virtualbox/debian/Oracle_vbox.asc-O-| sudo apt-key add-

Update source list

Sudo apt-get update

Install virtualbox

Sudo apt-get install virtualbox-4.1

If you are not familiar with PPA, you can directly download the deb installation package: Download link