Get the terminal size of a UNIX terminal using the tput UNIX command.
    Ref: http://stackoverflow.com/questions/263890/how-do-i-find-the-width-height-of-a-terminal-window

def get_unix_tput_terminal_size():
    """
    Get the terminal size of a UNIX terminal using the tput UNIX command.
    Ref: http://stackoverflow.com/questions/263890/how-do-i-find-the-width-height-of-a-terminal-window
    """
    import subprocess
    try:
        proc = subprocess.Popen(["tput", "cols"], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
        output = proc.communicate(input=None)
        cols = int(output[0])
        proc = subprocess.Popen(["tput", "lines"], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
        output = proc.communicate(input=None)
        rows = int(output[0])
        return cols, rows
    except (IOError, OSError):
        return None