Chapter 8      Command Reference

Command History Feature

Command History Feature

The CLI provides a command history feature. To display previously entered 

commands, press the up arrow key. After pressing the up arrow key, you can press 

the down arrow key to display the commands in reverse order. To run a command, 

press the Enter key while the command is displayed on the command line. You 

can also edit commands before pressing the Enter key.

System Help

You can obtain help using the following methods:

For a list of all commands and their syntax, enter help, then press Enter.

For help about a specific command, type the command name, a space, and a 

question mark, then press Enter, for example, ntp ?. The help contains 

command usage information and syntax.

Related Topics

Checking Command Syntax, page 8 2

Command Description Conventions, page 8 3

Privilege Level 0 Commands, page 8 4

Privilege Level 15 Commands, page 8 10

Maintenance Image Commands, page 8 56

Command Description Conventions

Command descriptions in this document and in the CLI help system use the 

following conventions:

Vertical bars (|) separate alternative, mutually exclusive elements. 

Square brackets ([ ]) indicate optional elements.

Braces ({ }) indicate a required choice.

Braces within square brackets ([{ }]) indicate a required choice within an 

optional element.

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