Implement short-cut commands: any unique command prefix should
        work.

def default(self, line):
        '''
        Implement short-cut commands: any unique command prefix should
        work.'''
        cmdargs = line.split()
        remain = ' '.join(cmdargs[1:])
        if 'show'.startswith(cmdargs[0]):
            self.do_show(remain)
        elif 'set'.startswith(cmdargs[0]):
            self.do_set(remain)
        elif 'sendeth'.startswith(cmdargs[0]):
            self.do_sendeth(remain)
        elif 'load'.startswith(cmdargs[0]):
            self.do_load(remain)
        elif 'save'.startswith(cmdargs[0]):
            self.do_save(remain)
        elif 'monitor'.startswith(cmdargs[0]):
            self.do_monitor(remain)
        elif 'unmonitor'.startswith(cmdargs[0]):
            self.do_unmonitor(remain)
        elif 'exec'.startswith(cmdargs[0]):
            self.do_exec(remain)
        elif 'add'.startswith(cmdargs[0]):
            self.do_add(remain)
        elif 'remove'.startswith(cmdargs[0]):
            self.do_remove(remain)
        elif 'replay'.startswith(cmdargs[0]):
            self.do_replay(remain)
        else:
            print ("Unrecognized command '{}'".format(line))