LXDE a good option for Ubuntu inside Virtual Box

When running guest operating systems inside a host operating system using virtualization, it is important to assign a correct memory allocation to the guest. If your computer for example has a 3 GB RAM , and you are running 3 virtual box at the same time allocating 1 GB to each you can not run any other application in your host OS. 

Ubuntu is a very popular Linux distribution because of its simplicity and also rich repositories. After Canonical decided to use Unity as their default user interface from release 10.10, Ubuntu uses a lot of system RAM just to boot and run in normal mode.  However, If you are using Virtual Box or VMware for virtualizing with the help of Ubuntu Linux instances,your system will be so slow that you can continue working anymore!

A very recommended solution to this problem is using LXDE desktop environment.  LXDE stands for "Lightweight X11 Desktop Environment". It consumes the least memory and CPU resources compared to other desktop environments(Gnome, KDE and Xfc).

It is also a very good option for old computers or also weak notebooks. When battery life matters it should be considered as the first option. I have installed it also on my ubuntu on my old Asus Eeepc netbook because it was impossible to work with Unity on that netbook.

To install it on your ubuntu system just enter this command in your shell :

$ sudo apt-get install lxde

when you login to your ubuntu don`t forget to select lxde as your desktop environment!