Understanding Cli Messages; Using Command History - Cisco Aironet 1240AG Series Hardware Installation Manual

Using no and default Forms of Commands
Using no and default Forms of Commands
Most configuration commands also have a no form. In general, use the no form to disable a feature or
function or reverse the action of a command. For example, the no shutdown interface configuration
command reverses the shutdown of an interface. Use the command without the keyword no to re-enable
a disabled feature or to enable a feature that is disabled by default.
Configuration commands can also have a default form. The default form of a command returns the
command setting to its default. Most commands are disabled by default, so the default form is the same
as the no form. However, some commands are enabled by default and have variables set to certain default
values. In these cases, the default command enables the command and sets variables to their default
values.

Understanding CLI Messages

Table 5-3
access point.
Table 5-3 Common CLI Error Messages
Error Message
% Ambiguous command:
"show con"
% Incomplete command.
% Invalid input detected
at '^' marker.

Using Command History

The IOS 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. You can customize the
command history feature to suit your needs as described in these sections:
•
•
•
Cisco Aironet 1240AG Series Access Point Hardware Installation Guide
5-4
D r a f t 1 A - C I S C O C O N F I D E N T I A L
lists some error messages that you might encounter while using the CLI to configure your
Meaning
You did not enter enough characters
for your access point to recognize the
command.
You did not enter all the keywords or
values required by this command.
You entered the command
incorrectly. The caret (^) marks the
point of the error.
Changing the Command History Buffer Size, page 5-5
Recalling Commands, page 5-5
Disabling the Command History Feature, page 5-5
Chapter 5
How to Get Help
Re-enter the command followed by a question mark (?)
with a space between the command and the question
mark.
The possible keywords that you can enter with the
command are displayed.
Re-enter the command followed by a question mark (?)
with a space between the command and the question
mark.
The possible keywords that you can enter with the
command are displayed.
Enter a question mark (?) to display all the commands
that are available in this command mode.
The possible keywords that you can enter with the
command are displayed.
Using the Command-Line Interface
OL-7293-01