Move the active X11 window in the specified direction

xmovewin.sh

#!/bin/sh
# dependency: xdotool and wmctrl

eval $(xdotool getactivewindow getwindowgeometry --shell)
DESKTOP=$(wmctrl -d | awk '{ print $4 }' | tr x ' ')
DWIDTH=$(echo $DESKTOP | cut -d ' ' -f 1)
DHEIGHT=$(echo $DESKTOP | cut -d ' ' -f 2)

case $1 in
left)
	X=0
	# West
	GRAVITY=4
	;;
right)
	X=$((DWIDTH - WIDTH))
	# East
	GRAVITY=6
	;;
up)
	Y=0
	# North
	GRAVITY=2
	;;
down)
	Y=$((DHEIGHT - HEIGHT))
	# South
	GRAVITY=8
	;;
*)
	echo 'unknown direction'
	exit 1
	;;
esac
wmctrl -r :ACTIVE: -e "$GRAVITY,$X,$Y,-1,-1"