The following output shows you how using the question mark can help you to work your way through a command and all of its parameters.
Router#? | Lists all commands available in the current command mode |
Router#c?clear clock | Lists all the possible choices that start with c |
Router#cl? clear clock | Lists all the possible choices that start with cl |
Router#clock | |
% Incomplete Command | Tells you that there are more parameters that need to be entered |
Router#clock ? set | Shows all subcommands for this command. Sets the time and date |
Router#clock set 19:50:00 14 July 2003 ? | Pressing the key confirms the time and date configured |
Router# | No Error message/Incomplete Command message means the command was entered successfully |