Lynda – AutoCAD: Using the Command Line

Find out more about the command line: the Windows-specific AutoCAD feature that helps you draw and navigate more efficiently in AutoCAD 2016. Shaun Bryant shows how to position the command line, customize its settings, and start using commands in your AutoCAD workflow. Starting with the basics (typing simple commands), this course gets you to a point where you can use the command line to work more quickly and productively on the world's most popular CAD platform.

http://www.lynda.com/AutoCAD-Mac-tutorials/AutoCAD-Using-Command-Line/428730-2.html