gistfile1.txt

#!/usr/bin/python

import os
import socket
import sys

def encode_packet(data):
    output = bytearray()
    for i in range(0, len(data)):
        tmpoutput = bytearray([0, data[i]])
        output.extend(tmpoutput)
    return output

def get_mac(address, ping=False):
    if ping:
        os.system("ping >/dev/null -c 1 -W 1 " + address)
    with open("/proc/net/arp", "r") as f:
        for line in f:
            data = line.split()
            if data[0] == address:
                return data[3]
    return None

def generate_packet(address, mcmd, scmd):
    mac = get_mac(address)
    if mac == None:
        mac = get_mac(address, ping=True)

    macdata = mac.split(":")

    payload = bytearray([0x00, 0x00, 0x09, 0xaa, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, int(macdata[0], 16), int(macdata[1], 16), int(macdata[2], 16), int(macdata[3], 16), int(macdata[4], 16), int(macdata[5], 16), 0x00, 0x00, mcmd, scmd])

    packet = bytearray([0x00, 0x31, 0x11])

    encodedpayload = encode_packet(payload)
    packet.extend(encodedpayload)

    checksum = 0

    for i in range(1, len(packet)):
        checksum += packet[i]
        checksum = checksum & 0xff
    packet.append(checksum)
    packet.append(0xff)

    return packet

def on(address):
    packet = generate_packet(address, 1, 1)
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    sock.sendto(packet, (address, 1025))

def off(address):
    packet = generate_packet(address, 1, 2)
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    sock.sendto(packet, (address, 1025))

if len(sys.argv) != 3:
    print "Usage: %s address on|off" % sys.argv[0]
    sys.exit(1)

if sys.argv[2] == "on":
    on(sys.argv[1])
elif sys.argv[2] == "off":
    off(sys.argv[1])
else:
    print "Usage: %s address on|off" % sys.argv[0]
    sys.exit(1)

MacOS Version
https://gist.github.com/oscarmorrison/6ebd9344e16448121ef4a5cdea1427b4