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24 CHAPTER 1: SYSTEM ACCESS
Common Command Line Error Messages
All the commands that are entered by users can be correctly executed if they have
passed the grammar check. Otherwise, error messages are reported to users.
Common error messages are listed in
Table 19.
History Command
The command line interface provides a function similar to DosKey. The commands
entered by users can be automatically saved by the command line interface and
you can invoke and execute them at any time. By default, the history command
buffer can store 10 history commands for each user. The operations are shown in
Table 20.
Editing Features of the Command Line
The command line interface provides a basic command editing function and
supports editing multiple lines. A command cannot be longer than 256 characters.
See
Table 21.
Table 19 Common Command Line Error Messages
Error messages Causes
Unrecognized command Cannot find the command.
Cannot find the keyword. Wrong parameter type.
The value of the parameter exceeds the range. Incomplete command
The command is incomplete. Too many parameters
You entered too many parameters. Ambiguous command
The parameters you entered are not specific.
Table 20 Retrieve History Command
Operation Key Result
Display history command display history-command Displays history commands
by the user who is entering
them.
Retrieve the previous history
command
Up cursor key <> or <Ctrl+P> Retrieves the previous history
command, if there is any.
Retrieve the next history
command
Down cursor key <> or
<Ctrl+N>
Retrieves the next history
command, if there is any.
Table 21 Editing Functions
Key Function
Common keys Inserts at the cursor position and the cursor
moves to the right, if the edition buffer still
has free space.
Backspace Deletes the character preceding the cursor
and the cursor moves backward.
Left cursor key < or Ctrl+B Moves the cursor a character backward
Right cursor key > or Ctrl+F Moves the cursor a character forward
Up cursor key ^ or Ctrl+P
Down cursor key v or Ctrl+N
Retrieves the history command.