4.1.2.6Partial Keyword Lookup
If you terminate a partial keyword with a question mark, alternatives that match the initial letters are provided. (Remember not to leave a space between the command and question mark.) For example s? shows all the keywords starting with “s.”
Console#show s?
snmp |
4.1.2.7Negating the Effect of Commands
For many configuration commands you can enter the prefix keyword no to cancel the effect of a command or reset the configuration to the default value. For example, the logging command logs system messages to a host server. To disable logging, specify the no logging command. This guide describes the negation effect for all applicable commands.
4.1.2.8Using Command History
The CLI maintains a history of commands that have been entered. You can scroll back through the history of commands by pressing the up arrow key. Any command displayed in the history list can be executed again, or first modified and then executed.
Using the show history command displays a longer list of recently executed commands.
4.1.2.9Understanding Command Modes
The command set is divided into Exec and Configuration classes. Exec commands generally display information on system status or clear statistical counters. Configuration commands, on the other hand, modify interface parameters or enable certain switching functions. These classes are further divided into different modes. Available commands depend on the selected mode. You can always type a question
Chapter 4
