Using The Command Modes; Getting Help - Cisco ONS 15454 Software Feature And Configuration Manual

Using the Command Modes

Using the Command Modes
The Cisco IOS command interpreter, called the EXEC, interprets and executes the commands you enter.
You can abbreviate commands and keywords by entering just enough characters to make the command
unique from other commands. For example, you can abbreviate the show command to sh and the
configure terminal command to config t.
When you type exit, the ML-Series card backs out one level. In general, typing exit returns you to global
configuration mode. Enter end to exit configuration mode completely and return to privileged EXEC
mode.

Getting Help

In any command mode, you can get a list of available commands by entering a question mark (?).
Router> ?
To obtain a list of commands that begin with a particular character sequence, type in those characters
followed immediately by the question mark (?). Do not include a space. This form of help is called word
help, because it completes a word for you.
Router# co?
configure
To list keywords or arguments, enter a question mark in place of a keyword or argument. Include a space
before the question mark. This form of help is called command syntax help, because it reminds you
which keywords or arguments are applicable based on the command, keywords, and arguments you have
already entered.
Router#configure ?
memory
network
overwrite-network
terminal
<cr>
To redisplay a command you previously entered, press the Up Arrow key. You can continue to press the
Up Arrow key to see more of the previously issued commands.
Tip If you are having trouble entering a command, check the system prompt, and enter the question mark (?)
for a list of available commands. You might be in the wrong command mode or using incorrect syntax.
You can press Ctrl-Z or enter end in any mode to immediately return to privileged EXEC (enable) mode,
instead of entering exit, which returns you to the previous mode.
Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature and Configuration Guide, R4.0
3-12
Configure from NV memory
Configure from a TFTP network host
Overwrite NV memory from TFTP network host
Configure from the terminal
Chapter 3 Initial Configuration
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