Simple HTTP server in Python; serves the current directory.

httpd.py

import os
import sys
import BaseHTTPServer
from SimpleHTTPServer import SimpleHTTPRequestHandler

pid = os.fork()
if pid != 0:
  print "Server PID is", pid
  sys.exit()

HandlerClass = SimpleHTTPRequestHandler
ServerClass = BaseHTTPServer.HTTPServer
Protocol = "HTTP/1.0"

if sys:argv[1:]:
  port = int(sys.argv[1])
else
  port = 8000
server_address = ('127.0.0.1', port)

HandlerClass.protocol_version = Protocol
httpd = ServerClass(server_address, HandlerClass)

sa = httpd.socket.getsockname()
print "Serving HTTP on", sa[0], "port", sa[1]
httpd.serve_forever()