System information

Using the Command Line Interface
2-11
Context-sensitive Help
Display a list of command-associated keywords and arguments by using the
context-sensitive help features. To get help for a specific command mode, command,
keyword, or argument, use the entries in Table 2-3.
Using the Command History
The CLI provides a history or record of command entries. This feature redisplays long
or complex commands or entries, including access lists. Use the command history
feature to complete the following tasks:
• Setting the Command History Buffer Size
• Recalling Commands
• Disabling the Command History Feature
Setting the Command History Buffer Size
By default, the history buffer stores ten command lines. To change the number of
stored command lines for the current terminal session, use the history size command
in User EXEC or Privileged EXEC mode, as shown below:
Table 2-3 Context-sensitive Help Details
Entry Result
help Displays brief help system description.
<abbreviated command>? Displays commands that begin with the
abbreviated entry. Do not enter a space
before the question mark.
? Lists all commands available for the current
mode.
<command> ? Lists associated keywords for the command.
Be sure to enter a space before the question
mark.
<command> keyword ? Lists associated arguments for the keyword.