lowercase names of all sub-directories and files

lowercase_the_filesystem.py

#!/usr/bin/python

# This script will rename in lower case every file and directory found in the
# current directory and below.

import os

for root, dirs, files in os.walk('.'):
    for filename in files:
        old_name = os.path.join(root, filename)
        new_name = old_name.lower()
        print old_name + ' --> ' + new_name
        os.renames(old_name,new_name)