Converting filenames from UPPERCASE to lowercase

I searched and found the following thread:
http://blog.mc-thias.org/?title=rename-files-from-upper-case-filename-to&more=1&c=1&tb=1&pb=1

Based on the post given by Jadu Saikia, I got the bash script of my own version as follows:

ls * | sed -e p -e 's/.*/\L&/g' |xargs -n 2 mv

One new thing I've learned in this example is the ``\L'' part, which can be found in sed's FAQ.