While there are many Fallout: New Vegas console commands, however, only a select few are of interest, as many others are used for debugging purposes or perform abstract functions that will have little to no effect. Like many games built on the Gamebryo engine, PC versions of Fallout: New Vegas includes a command console that you can use to change various game aspects and functions, such as adding and removing items, changing object sizes and modifying or disabling NPC behavior, to give but a few examples.
Hackin' the Mojave: Fallout: New Vegas Console Commands