Command Line Editing and Recall

Given the syntactic complexity and advanced typing skills involved with some of these command lines, you are likely to commit syntax errors or simply tire of retyping commands that you already typed just a few moments previously. At that point you will appreciate the ability to recall previous command lines and edit them. To cycle backwards through the last 25 command lines, hit Ctrl+R (typically the same as the Page-Up key). To cycle forwards through them, hit Ctrl+T (page-down). Once you find the previously-typed command line, you can re-execute it just by hitting Enter. If instead of just re-executing it as is, you prefer to edit it first, you can do so using the following keystrokes:

Primary	Alternate	Editing Action
ctrl+a		Move cursor to previous word
ctrl+c		Abort the current line (start a new one).
ctrl+d	delete	Delete the character under the cursor
ctrl+f	insert	Insert a space under the cursor
ctrl+h	LeftArrow	Move cursor to the left
ctrl+l	RightArrow	Move cursor to the right
ctrl+n		Move cursor to the end of the line
ctrl+q		Toggle insert/replace mode
ctrl+r	PageUp	Cycle through the previously typed ten command lines.
ctrl+t	PageDown	Cycle forward through the previously typed ten command lines (after having used ctrl+r to go backwards).
ctrl+u		Move cursor to start of command line
ctrl+w		Move cursor to next word
ctrl+y		Delete line to the right of the cursor