-extern command_ret_t do_help(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_echo(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_env_print(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_env_default(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_env_set(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_env_save(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_loadf(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_go(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_restart(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_dump_mem(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_eep_cp(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_busreq_pulse(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_date(cmd_tbl_t *, int, int, char * const []);
-//extern command_ret_t do_clock(cmd_tbl_t *, int, int, char * const []);
-//extern command_ret_t do_clock2(cmd_tbl_t *, int, int, char * const []);
-extern command_ret_t do_pin(cmd_tbl_t *, int, int, char * const []);