revert a revert

[rupert.thurner]

hi,

i am a little ashame to ask such a question here, but maybe somebody of you already had a solution.
what is the simplest solution to copy back all orig files to the original name, and with it revert a revert?

something what could look like this in windows power shell:
get-childItem -recurse | Where {$_.extension -eq ".orig"} | rename-item -newname { $_.name -replace ".orig","" }

rupert.