The history buffer stores the last 10 commands you entered. History substitution allows you to access these
commands without retyping them, by using special abbreviated commands.
Table 12: History Substitution Commands
Purpose
Command
Recall commands in the history buffer, beginning
with the most recent command. Repeat the key
sequence to recall successively older commands.
Ctrl-P
or the
Up Arrow
key
Return to more recent commands in the history buffer
after recalling commands with
Ctrl-P
or the
Up
Arrow
key.
Ctrl-N
or the
Down Arrow
key
While in EXEC mode, list the last several commands
you have just entered.
Router#
show history
The command modes available in the traditional Cisco IOS CLI are exactly the same as the command modes
available in Cisco IOS XE.
Use the CLI to access Cisco IOS XE software. Because the CLI is divided into many different modes, the
commands available to you at any given time depend on the mode that you are currently in. Entering a question
mark (
?
) at the CLI prompt allows you to obtain a list of commands available for each command mode.
When you log in to the CLI, you are in user EXEC mode. User EXEC mode contains only a limited subset
of commands. To have access to all commands, enter privileged EXEC mode, normally by using a password.
From privileged EXEC mode, you can issue any EXEC command
—
user or privileged mode
—
or you can
enter global configuration mode. Most EXEC commands are one-time commands. For example,
show
commands show important status information, and
clear
commands clear counters or interfaces. The EXEC
commands are not saved when the software reboots.
Configuration modes allow you to make changes to the running configuration. If you later save the running
configuration to the startup configuration, these changed commands are stored when the software is rebooted.
To enter specific configuration modes, you must start at global configuration mode. From global configuration
mode, you can enter interface configuration mode and a variety of other modes, such as protocol-specific
modes.
The table below describes how to access and exit various common command modes of the Cisco IOS XE
software. It also shows examples of the prompts displayed for each mode.
Cisco CSR 1000v Series Cloud Services Router Software Configuration Guide
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Using Cisco IOS XE Software
Using Cisco IOS XE Software