Describe a quick way to repeat an AutoCAD command.

JUST PRESS "ENTER" OR "SPACE BAR" TO REPEAT THE COMMAND IN AUTOCAD

Just Press Enter or space bar to repeat last command.

From my daily use, I understood that the most convenient setting on the mouse, its right button on my set that I repeated my last command. Sometimes so much dent in drawing me to even get in the way but that greatly facilitates my job.

There is a command called MULTIPLE which is used to repeat same command after and after. Press escape when you feel like enough

Just Press Enter to repeat the Command In AutoCAD.

The best way to customize your keyboard & mouse according to your choice. Some people find spacebar is more convenient than right click of mouse to repeat a command & vice versa.