Backspace 

Erases character to the left of the insert point 

Shift-Backspace 

Erases character to the right of the insert point 

Control-w 

Erases word to the left of the insert point 

Control-Shift-w 

Erases word to the right of the insert point 

Control-u 

Erases to the beginning of the line 

Control-Shift-u 

Erases to the end of the line