How to install MSI Radeon R9 270 graphics card driver?

Open the terminal and type:

sudo apt-get install fglrx-updates fglrx-amdcccle  

Reboot the computer to enable the graphics driver.

fglrx-updates is the updated version of the proprietary video driver for the AMD graphics accelerators, suitable for your recent model MSI Radeon R9 graphics card. At the AMD Graphics Drivers and Software website you can check whether the up-to-date proprietary graphics driver is suitable for your graphics card using the selection form that looks like this:

The only thing that you did wrong was you misspelled fglrx-updates, so your command said it was unable to locate the package. You can also install fglrx-updates from either the Ubuntu Software Center or the Additional Drivers utility.