How can I bulk rename files in PowerShell?

Question

I\'m trying to do the following:

Rename-Item c:\\misc\\*.xml *.tmp

I basically want to change the extension on every files within a directory t

Answer 1

Here's another variant that will work.

dir *.xml | Rename-Item -NewName {$_.BaseName + ".tmp"}

$_.BaseName will do the "base" name without the (last) extension.