Using The No And Default Forms Of Commands; Command-Line Conventions; Command-Line Editing Key Conventions; Command-Line Completion - Cisco CSACS-1121-K9 Reference Manual

Chapter 2 Using the ACS Command Line Interface
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Using the No and Default Forms of Commands

Some EXEC or configuration commands have a no form. In general, use the no form to disable a
function. Use the command without the no keyword to re-enable a disabled function or to enable a
function disabled by default; for example, an IP address enabled by default. To disable the IP address,
use the no ip address command; to re-enable the IP address, use the ip address command.
Configuration commands can also have a default form, which returns the command settings to the
default values. Most commands disable by default, so in such cases using the default form has the same
result as using the no form of the command. However, some commands are enabled by default and have
variables set to certain default values. In these cases, the default form of the command enables the
command and sets the variables to their default values.
See
configuration commands, and the no and default forms of a command.

Command-Line Conventions

While reading this document, you might not understand some of the information if you do not know
certain basic conventions of CLI usage.
Note the following sections:
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Command-Line Editing Key Conventions

ACS provides a number of keyboard shortcuts that you can use to edit an entered line.
Tab
Tries to finish the current command.
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To display keywords and arguments for a command, enter ? at the prompt or after entering part of a
command followed by a space:
acs/admin# show ?
ACS displays a list and brief description of available keywords and arguments.
The <cr> symbol in command help stands for "carriage return" (Return or Enter key). The
Note
<cr> at the end of command help output indicates that you have the option to press Enter to
complete the command and that the arguments and keywords in the list preceding the <cr>
symbol are optional. The <cr> symbol by itself indicates that no more arguments or
keywords are available, and that you must press Enter to complete the command.
To redisplay a command that you previously entered, press the Up Arrow key. Continue to press the
Up Arrow key to see more commands.
Appendix A, "ACS Command Reference,"
Command-Line Editing Key Conventions, page 2-11
Command-Line Completion, page 2-12
Continuing Output at the --More-- Prompt, page 2-13
for a description of the complete syntax of the
CLI Reference Guide for the Cisco Secure Access Control System 5.1
Navigating the CLI Commands
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