Saving commands in the history buffer, Command line error information – H3C Technologies H3C SecPath F1000-E User Manual
Page 221
7
Action Function
Press Ctrl+E
Moves the cursor to the end of the current line.
Press PageUp
Displays the previous page.
Press PageDown
Displays the next page.
Saving Commands in the History Buffer
The CLI automatically saves the commands that have been used lately to the history buffer. You can know
the operations that have been executed successfully, invoke and repeatedly execute them as needed. By
default, the CLI can save up to 10 commands for each user. To set the capacity of the history buffer for
the current user interface, use the history-command max-size command. For more information
about the history-command max-size command, see User Interface Commands in the System
Volume. The following table lists the operations that you can perform. In addition:
•
The commands saved in the history buffer are in the same format as the commands you input. If you
input an incomplete command, the command saved in the history buffer is also an incomplete
command.
•
If you repeatedly execute the same command, the device saves only the earliest command.
However, if you execute the same command in different formats, the system considers them as
different commands. For example, if you repeatedly execute the display cu command, the system
saves only one command in the history buffer. If you execute the command in the format of display
cu and display current-configuration respectively, the system saves them as two commands.
Follow these steps to access history commands:
To do…
Use the key/command…
Result
View the history commands
display history-command
Displays the commands that you
have entered
Access the previous history
command
Up-arrow key or Ctrl+P
Displays the previous history
command, if any.
Access the next history command
Down-arrow key or Ctrl+N
Displays the next history
command, if any.
NOTE:
You may use arrow keys to access history commands in Windows 200X and XP Terminal or Telnet.
However, the up-arrow and down-arrow keys are invalid in Windows 9X HyperTerminal, because they
are defined in a different way. You can press Ctrl+P or Ctrl+N instead.
Command Line Error Information
The commands are executed only if they have no syntax error. Otherwise, error information is reported.
lists some common errors.