i have a script which will do a specific task for a file in a folder,now i would like to do the same task for the all files in that folder(25 files).how can i do that?

Thanks in advance.

With Python that is a simple task:

import os

# list just the files in a given folder
folder = 'C:/Temp'
for (paths, dirs, files) in os.walk(folder):
    # testing, this shows a list of filenames
    print files
    # now loop through the list of filenames
    for filename in files:
        # testing
        print filename
        # now enter code to process each of your files
        # ...