size.py

# I have this on my server so that I can find out the size of any remote file just by SSHing into my server and running this script.

import urllib2
import sys

url = sys.argv[1]
usock = urllib2.urlopen(url)
size =  usock.info().get('Content-Length')
if size is None:
    size = 0
size = float(size) / 1024.0 / 1024.0 # in bytes

print str(size) + " MBytes"