advent-of-code/12021/02/02_2.awk

BEGIN{
 x =0
 y = 0
 aim = 0
}
{
 if($1 == "forward"){
	y += aim*$2
	x += $2
 }
 else if($1 == "down"){
#	y += $2
 	aim += $2
 }
 else if($1 == "up"){
#	y -= $2
	aim -= $2
 }
 print x, y, aim
}
END{
 print x, y, aim
 print x*y
}