Tip for Cisco IOS Software Command Help.
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Tip for Cisco IOS Software Command Help.
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The question mark (?) key provides help for Cisco IOS commands and their parameters. When a user enters the ?, the CLI takes action immediately. A user need not to press the Enter key. As soon as the ? key is pressed, the help text of the command entered is displayed. The IOS also redisplays the command that is entered before the ? key is pressed. It saves a user some keystrokes. If no command is entered before pressing the ? key, help for all commands is displayed.
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