tree 612e84cfbe4a222b8046c04a1b1371d35c7dfc62
parent 17c8980ad31c6c77c35124cf8d9e3a3c3c8c732a
author ERAMOTO Masaya <eramoto.masaya@jp.fujitsu.com> 1517894849 +0900
committer Luiz Augusto von Dentz <luiz.von.dentz@intel.com> 1517918405 -0200

shared/shell: Print out help if using invalid command

Because Vincent Petry kindly reported that it is hard to use a command
in a submenu, clients are changed to print out help messages as below
when an invalid command is used.

  [bluetooth]# list-attributes
  Invalid command in menu main: list-attributes

  Use "help" for a list of available commands in a menu.
  Use "menu <submenu>" if you want to enter any submenu.
  Use "back" if you want to return to menu main.