Problem scenario
You have seen the PowerCLI -f option. What does it mean or do?
…-f ($_.SizeGB)…Solution
It manipulates the format of the output of a PowerCLI command usually to make the output more readable; one purpose is to make the output consumable for another PowerCLI command.
(The answer was adapted from pages 114 and 115 of PowerCLI Cookbook by Sellers.)