11.20 Linux桌面系統 上課心得

                 Getting Started with Ubuntu 12.04 

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2.Operating System (OS)作業系統

Ubuntu 使用 Unity 桌面環境（desktop environment）

Unity
All GUI based operating systems use a desktop environment. 
Desktop environments encompass many things, such as

The look and feel of your system

The way the desktop is laid out

  How the desktop is navigated by the user

The Launcher          

           rovides easy access to application   

The Menu Bar

         

The Dash 

         is a tool to help you access and find applications