Convert all file extensions to lower-case

Question

I\'m trying to lower-case all my extensions regardless of what it is. So far, from what I\'ve seen, you have to specify what file extensions you want to convert to lower-cas

Answer 1

I got success with this command.

rename JPG jpg *.JPG

Where rename is a command that tells the shell to rename every occurrence of JPG to jpg in the current folder with all filenames having extension JPG.

If you see Bareword "JPG" not allowed while "strict subs" in use at (eval 1) line 1 with this approach try:

rename 's/\.JPG$/.jpg/' *.JPG