handy script to print out mouse position in Linux (tested on Ubuntu 11.04 64-bit). requires python-xlib

gistfile1.py

import time
from Xlib import X, display

while True:
    d = display.Display()
    s = d.screen()
    root = s.root
    a=root.query_pointer()
    b=a._data
    print b["root_x"], b["root_y"]
    d.sync()
    time.sleep(1)