The Fundamental Operating System DOS is still alive. For basic study purpose, DOS is Used in most of the Universities. Now Also people like DOS games. The Famous C language Compilers are woking only is DOS. You can Make a virtual DOS environment Linux.
sudo apt-get install dosbox
(Your can use Synaptic Package Manager and search for dosbox)
After Installation you can make a folder xxxxx in your home directory
(eg: $mkdir mydos)
copy your favorite dos programs and games like Turboc, dave, digger etc in this directory
Now you can run dosbox by typing dosbox in a terminal or
by select it from menu
You will get a small dos window with Z:\> prompt
in Z prompt type the following
Z:\>mount c /home/xxx/mydos
This command for mounting your dos directory to C Drive
(in my case my dos files are in /home/shibu/mydos )
Now You are ready for running your dos programms
Z:\> c: ( change drive to c:)
Z:\>dir (this will list your dos files placed in /home/shibu/mydos)
if ther is our old famous digger game
Z:\>digger and Enjoy it.