Allied Telesis AT-S95 CLI - Manual (Page 21)

Using the CLI
Editing Features
Page 9
Editing Features
Entering Commands
A CLI command is a series of keywords and arguments. Keywords identify a command, and arguments specify
configuration parameters. For example, in the command show interfaces status ethernet 1/g11, show,
interfaces and status are keywords, ethernet is an argument that specifies the interface type, and 1/g11
specifies the port.
To enter commands that require parameters, enter the required parameters after the command keyword. For
example, to set a password for the administrator, enter:
Console(config)# username admin password alansmith
When working with the CLI, the command options are not displayed. The command is not selected from a menu,
but is manually entered. To see what commands are available in each mode or within an interface configuration,
the CLI does provide a method of displaying the available commands, the command syntax requirements and in
some instances parameters required to complete the command. The standard command to request help is ?.
There are two instances where help information can be displayed:
• Keyword lookup — The character ? is entered in place of a command. A list of all valid commands and
corresponding help messages are is displayed.
• Partial keyword lookup — If a command is incomplete and or the character ? is entered in place of a
parameter. The matched keyword or parameters for this command are displayed.
To assist in using the CLI, there is an assortment of editing features. The following features are described:
• Terminal Command Buffer
• Command Completion
• Nomenclature
• Keyboard Shortcuts
Terminal Command Buffer
Every time a command is entered in the CLI, it is recorded on an internally managed Command History buffer.
Commands stored in the buffer are maintained on a First In First Out (FIFO) basis. These commands can be
recalled, reviewed, modified, and reissued. This buffer is not preserved across device resets.
By default, the history buffer system is enabled, but it can be disabled at any time. For information about the
command syntax to enable or disable the history buffer, see history.
There is a standard default number of commands that are stored in the buffer. The standard number of 10
commands can be increased to 216. By configuring 0, the effect is the same as disabling the history buffer
system. For information about the command syntax for configuring the command history buffer, see history size.
To display the history buffer, see show history.
Keyword Description
Up-arrow key
Ctrl+P Recalls commands in the history buffer, beginning with the most recent
command. Repeats 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.