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Catalyst 3550 Multilayer Switch Software Configuration Guide
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Chapter 2 Using the Command-Line Interface
Using Command History
Using Command History
The IOS provides a history or record of commands that you have entered. This feature is particularly
useful for recalling long or complex commands or entries, including access lists. You can customize the
command history feature to suit your needs as described in these sections:
•
Changing the Command History Buffer Size, page 2-5
•
Recalling Commands, page 2-5
•
Disabling the Command History Feature, page 2-5
Changing the Command History Buffer Size
By default, the switch records ten command lines in its history buffer. Beginning in privileged EXEC
mode, enter this command to change the number of command lines that the switch records during the
current terminal session:
Switch# terminal history
[
size number-of-lines
]
The range is from 0 to 256.
Beginning in line configuration mode, enter this command to configure the number of command lines
the switch records for all sessions on a particular line:
Switch(config-line)# history
[
size number-of-lines
]
The range is from 0 to 256.
Recalling Commands
To recall commands from the history buffer, perform one of the actions listed in
Table 2-4
:
Disabling the Command History Feature
The command history feature is automatically enabled.
Table 2-4
Recalling Commands
Action
1
1.
The arrow keys function only on ANSI-compatible terminals such as VT100s.
Result
Press Ctrl-P or the up arrow key.
Recall commands in the history buffer, beginning with the most recent command.
Repeat the key sequence to recall successively older commands.
Press Ctrl-N or the down arrow key.
Return to more recent commands in the history buffer after recalling commands
with Ctrl-P or the up arrow key. Repeat the key sequence to recall successively
more recent commands.
show history
While in privileged EXEC mode, list the last several commands that you just
entered. The number of commands that are displayed is determined by the setting
of the terminal history global configuration command and history line
configuration command.
