Gedit:

Shortcuts:

Erase a word	Ctrl	W
Erase a line	Ctrl	U
Move to the start of the line	Ctrl	A
Move to the end of the line	Ctrl	E
Move forward one word	Alt	F
Move back one word	Alt	B
Move forward one character	Ctrl	F
Move back one character	Ctrl	B
Delete from the cursor to the beginning of the line	Ctrl	U
Delete from the cursor to the end of the line	Ctrl	K
Delete from the cursor to the start of the word	Ctrl	W
Delete previous word	Alt	Backspace
Clear the screen leaving the current line at the top of the screen	Ctrl	L

Add shortcut to delete a line

Manage External Tools...

Shortcut key: Shift+Ctrl+D

#!/bin/sh

#first: place the cursor at the end of the line by pressyng END key
#second: press Shift-CTRL-D
sed -r 's/(.*)/\n\1/'