Owner's Manual

Using the CLI 55

Negating the Effect of Commands

For many configuration commands, the prefix keyword

can be entered to cancel the effect of a

command or reset the configuration to the default value. This guide describes the negation effect

for all applicable commands.

Command Completion

If a command is entered and it is not complete, if the command is invalid, or if some parameters of

the command are invalid or missing, the appropriate error message is displayed. This assists in

entering the correct command. By pressing the <Tab> button, an incomplete command is

entered. If the characters already entered are not enough for the system to identify a single

matching command, press "?" to display the available commands matching the characters already

entered.

Incorrect or incomplete commands are automatically re-entered next to the cursor. If a parameter

must be added, the parameter can be added to the basic command already displayed next to the

cursor. The following example indicated that the command

interface ethernet

requires the

parameter

<port-num>

Keyboard Shortcuts

The CLI has a range of keyboard shortcuts to assist in editing the CLI commands. The following

table describes the CLI shortcuts.

(config)#interface ethernet

missing mandatory parameter

(config)#interface ethernet

Keyboard Key Description

Up-arrow key Recalls commands in the history buffer, beginning with the most recent command. Repeat the

key sequence to recall successively older commands.

Down-arrow key Returns to more recent commands in the history buffer after recalling commands with the up

arrow key. Repeating the key sequence will recall successively more recent commands.

Ctrl+A Moves the cursor to the beginning of the command line.

Ctrl+E Moves the cursor to the end of the command line.

Ctrl+Z / End Returns back to the Privileged EXEC mode from all modes.

Backspace key Moves the cursor back one space.