D-Link DSR-1000 - Chapter 2. Basic Commands Available on the CLI; Context Sensitive Help; Auto-Completion; Movement Keys

Unified Services Router CLI Reference Guide
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Chapter 2. Basic commands available
on the CLI
2.1 CONTEXT SENSITIVE HELP
[?] - Display context sensitive help. This is either a list of possible command
completions with summaries, or the full syntax of the current command. A subsequent
repeat of this key, when a command has been resolved, will display a detailed
reference.
2.2 AUTO-COMPLETION
The following keys both perform auto-completion for the current command line. If the
command prefix is not unique a subsequent repeat of the key will display possible
completions.
 [enter] - Auto-completes, syntax-checks then executes a command. If there is a
syntax error then offending part of the command line will be highlighted and
explained.
 [space] - Auto-completes, or if the command is already resolved, inserts a
space.
2.3 MOVEMENT KEYS
 [CTRL-A] - Move to the start of the line.
 [CTRL-E] - Move to the end of the line.
 [up] - Move to the previous command line held in history.
 [down] - Move to the next command line held in history.
 [left] - Move the insertion point left one character.
 [right] - Move the insertion point right one character.
2.4 DELETION KEYS
 [CTRL-C] - Delete the whole line.
 [CTRL-D] - Delete the character to the right on the insertion point.
 [CTRL-K] - Delete all the characters to the right of the insertion point.
 [Backspace] - Delete the character to the left of the insertion point.