Recursively convert all folder and file names to lower-case or upper-case

Question

I have a folder structure like follows.

-FOO
  -BAG
     Rose.TXT
-BAR
    JaCk.txt

I need the following output.

-foo
  -bag
    rose.txt
-bar
    jack.txt

Answer 1

I realize you want ruby code, but I present to you a one liner to run in your shell:

for i in `find * -depth`; do (mv $i `echo $i|tr [:upper:] [:lower:]`); done

as found here: http://ubuntuforums.org/showthread.php?t=244738

Run it once, and it should do the trick.

Update

Ruby Code:

Dir.glob("./**/*").each do |file|
  File.rename(file, file.downcase) #or upcase if you want to convert to uppercase
end

Answer 2

Dir["**/*"].each {|f| File.rename(f, f.downcase)}