cmd.py

# http://stackoverflow.com/questions/1378974/is-there-a-way-to-start-stop-linux-processes-with-python
# WARNING https://docs.python.org/2/library/subprocess.html#frequently-used-arguments
def CMD(cmd) :
    p = subprocess.Popen(cmd, shell=True,
                         stdin=subprocess.PIPE,
                         stdout=subprocess.PIPE,
                         stderr=subprocess.PIPE,
                         close_fds=False)
    return (p.stdin, p.stdout, p.stderr)