sanitize_file_names.py

#!/usr/bin/env python2.4

import os
import string

path = "/var/spool/asterisk/monitor/"

def make_safe_filename(file):
    safechars = string.letters + string.digits + "-_."
    try:
        return filter(lambda c: c in safechars, file)
    except:
        return ""
    pass

for root, dirs, files in os.walk(path):
    for name in files:
        checkname = make_safe_filename(name)
        if name != checkname:
            os.rename(root+'/'+name, root+"/"+checkname)
            print name, "has been renamed to ", checkname