Rename with Force

You want to rename a file, but the new file already exists.

ren file.old file.new
ren : Cannot create a file when that file already exists.

(ren is an alias for Rename-Item)

You think "I know, I'll use (the) force!"

ren file.old file.new -Force
ren : Cannot create a file when that file already exists.

But that doesn't work either....

You google and feel like a fool, but eventually determine you need to use Move-Item

mv file.old file.new -Force

Q.E.D.