Previewing an Operation
Many of the commands shown in this chapter and in Configuring Installed Images have an -n option that enables you to see what the command will do without making any changes to the image.
Tip:
Best practice is to use the-n option whenever it is available. Use the -n option with one or more verbose options (-nv, -nvv) and review the effects of the command before you execute the command without the -n option.