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218 C
HAPTER
10: P
ACKET
F
ILTERING
Table 29 Commands for the Built-In Packet Filter Editor
Command Keys Description
List buffer Ctrl+l Displays each of the lines in the editing buffer, and then
redisplays the line currently being edited.
Next Line Ctrl+n Moves cursor to start of next line.
Previous Line Ctrl+p Moves cursor to start of previous line.
Start of Line Ctrl+a Moves cursor to the start of the line it is in.
End of Line Ctrl+e Moves cursor to the end of the line it is in.
Left 1 Character Ctrl+b Moves cursor left one character within a line.
Right 1
Character Ctrl+f Moves cursor right one character within a line.
Insert Line Enter Inserts a new line. The new line becomes the current line,
with the cursor positioned at the start. If the cursor is
positioned over the first character on a line when you
press [Enter], a blank new line is inserted before the
current line. Otherwise, the current line is split at the
cursor position, with the current line retaining the
characters before the cursor, followed by the new line
containing the rest of the characters.
Delete Previous
Character Ctrl+h Deletes a single character preceding the cursor and shifts
the remainder of the line
left one position.
Delete Current
Character Ctrl+d Deletes a single character under the cursor and shifts the
remainder of the line
left one position.
Delete Line Ctrl+k Deletes the remainder of the line from the current cursor
position. If the cursor is positioned over the first
character, all of the characters on the line are deleted, but
the line is retained. A second Delete Line command
removes the line from the edit buffer.
Insert/Overstrike
Toggle Ctrl+o Toggles between the insert mode and overstrike mode.
Write Changes Ctrl+w Writes (saves) the current contents of the edit buffer into
the packet filter definition. No syntax verification of the
definition is performed at this point other than to verify
that the length of the source is within the maximum
limits. If the source is too long, the message
Error:
Edit buffer exceeds maximum length
is
displayed. The contents of the edit buffer are unaffected;
however, the packet filter definition contains only those
lines that fit entirely within the length limitation.
Exit Editor ESC Allows you to leave the editor. You receive a warning if
the edit buffer has not been successfully written since the
last modification. You can either discard the changes or
return to the editor. Note that only those changes made
since the last Write Changes command are discarded.