Cisco Systems 78-11741-02 manual Example How to Find Command Options, Command Comment, Xli

Using Cisco IOS Software

Getting Help

Example: How to Find Command Options

This section provides an example of how to display syntax for a command. The syntax can consist of optional or required keywords and arguments. To display keywords and arguments for a command, enter a question mark (?) at the configuration prompt or after entering part of a command followed by a space. The Cisco IOS software displays a list and brief description of available keywords and arguments. For example, if you were in global configuration mode and wanted to see all the keywords or arguments for the arap command, you would type arap ?.

The <cr> symbol in command help output stands for “carriage return.” On older keyboards, the carriage return key is the Return key. On most modern keyboards, the carriage return key is the Enter key. The <cr> symbol 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.

Table 2 shows examples of how you can use the question mark (?) to assist you in entering commands. The table steps you through configuring an IP address on a serial interface on a Cisco 7206 router that is running Cisco IOS Release 12.0(3).

Table 2 How to Find Command Options

Command		Comment
Router> enable		Enter the enable command and
Password: <password>		password to access privileged EXEC
Router#		commands. You are in privileged
		EXEC mode when the prompt changes
		to Router#.
Router# configure terminal		Enter the configure terminal
Enter configuration commands, one per line. End with CNTL/Z.		privileged EXEC command to enter
Router(config)#		global configuration mode. You are in
		global configuration mode when the
		prompt changes to Router(config)#.
Router(config)# interface serial ?		Enter interface configuration mode by
<0-6>	Serial interface number	specifying the serial interface that you
Router(config)# interface serial 4 ?		want to configure using the interface
/
		serial global configuration command.
Router(config)# interface serial 4/ ?
<0-3>	Serial interface number	Enter ? to display what you must enter
Router(config)# interface serial 4/0
		next on the command line. In this
Router(config-if)#
		example, you must enter the serial
		interface slot number and port number,
		separated by a forward slash.
		You are in interface configuration mode
		when the prompt changes to
		Router(config-if)#.

Cisco IOS IP Configuration Guide

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