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

Even easier - remember that the replace search string is a regular expression,

dir *.xml | rename-item -newname {$_.name -replace "xml$","tmp"}

The "$" represents end-of-string, so the characters "xml" must be the last three chars of the filename.

Answer 2

This works well too when you're in the desired directory.

Dir | Rename-Item –NewName { $_.name –replace "old","new" }