Asante Technologies 35516 Using CLI Command History, Using the No and Default Forms of Commands

In the example above, a command has been issued that is unknown or ambiguous.

Router(config)# router

%Command incomplete. Router(config)#

In the example above a command has been issued that is incomplete. In the following examples, various correct commands (using route) are displayed.

Router(config)# route?

route-map		Create route-map or enter route-map command mode
router		Enable a routing process
Router(config)# route
Router(config)# router ?
ospf	Open Shortest Path First
rip	Routing Information Protocol (RIP)

Router(config)# router

Router(config)#router rip

Router(config-rip-router)#

3.6 Using CLI Command History

The CLI user interface provides a history or record of commands that you have entered. This feature is particularly useful for recalling long or complex commands or entries, including access lists. To recall commands from the history buffer, use one of the following commands:

Command	Purpose
Press Ctrl-Por the up arrow	Recall commands in the history buffer, beginning with
key	the most recent command. Repeat the key sequence
	to recall successively older commands.
Press Ctrl-Nor the down arrow	Return to more recent commands in the history buffer
key	after recalling commands with Ctrl-P or the up arrow
	key. Repeat the key sequence to recall successively
	more recent commands.
show history	While in EXEC mode, list the last several commands
	entered.

3.7 Using the No and Default Forms of Commands

Almost every router configuration command has an opposite no form that negates or reverses a command. In general, the no form is used to disable a function that has been enabled. To re-enable a disabled function, or to enable a function that is disabled by default, use the command without the no keyword. For example, Address Resolution Protocol (ARP) is enabled by default. Specify the command no arp to disable the ARP table; to re-enable the ARP table, use the arp command.

3.8 Using Command-Line Editing Features and Shortcuts

There are a variety of shortcuts and editing features enabled for the CLI command-line interface. The following subsections describe these features:

•Moving Around on the Command Line

•Completing a Partial Command Name

26