We all know when we log in to any Cisco Routers or a Cisco Switch; in user mode we cannot see some of the show help commands, as demonstrated below
We can enable a Cisco Switch or a Cisco Router to display the all available commands when help (?) is used on the “show” command. To enable this feature on a Cisco Router or Cisco Switch use the command “terminal full-help” from the user mode as shown below.
Here is the example of “show?” command after “terminal full-help” (I have underlined some of the commands with red line, compare with first figure to see the difference)
This Cisco (terminal full-help) command is a simple little know feature, which definitely helps the user who has no access to privilege level in any Cisco Router or Cisco Switch.