Rename Files in Windows Sub-Directories

Windows command prompt: (If inside a batch file, change %x to %%x)

for /r %x in (*.html) do ren "%x" *.htm

This also works for renaming the middle of the files

for /r %x in (website*.html) do ren "%x" site*.htm

original post: http://stackoverflow.com/questions/245840/rename-files-in-sub-directories