Use shortcut keys to resize and position windows in LINUX

#!/bin/bash

ICON=66
GapX=1
GapY=1
TOP_MARGIN=0
BOTTOM_MARGIN=25
LEFT_MARGIN=0
RIGHT_MARGIN=$ICON

#Max Resolution X and Y
X=`xrandr | grep "*" | awk '{print $1}' | awk -F "x" '{print $1}'`
Y=`xrandr | grep "*" | awk '{print $1}' | awk -F "x" '{print $2}'`

echo Screen Resolution X x Y = $X x $Y

#Working area
WX=$((($X)-$ICON))
WY=$((($Y)-$BOTTOM_MARGIN))

echo Wroking area resolution X x Y = $WX x $WY

#X Cordinates
X1=$((($WX/2)))
X2=$((($WX/2)+$GapX))

#Y Cordinates
Y1=$((($WY/2)))
Y2=$((($WY/2)+$GapY))

echo X1 = $X1, X2 = $X2
echo Y1 = $Y1, Y2 = $Y2

case "$1" in

left)
wmctrl -r :ACTIVE: -e "1,0,0,$X1,$WY"
;;

right)
wmctrl -r :ACTIVE: -e "1,$X2,0,$X2,$WY"
;;

up)
wmctrl -r :ACTIVE: -e "1,0,0,$WX,$Y1"
;;

down)
wmctrl -r :ACTIVE: -e "1,0,$Y2,$WX,$Y1"
;;

righttop)
wmctrl -r :ACTIVE: -e "1,$X2,0,$X2,$Y1"
;;

lefttop)
wmctrl -r :ACTIVE: -e "1,0,0,$X1,$Y1"
;;

rightbot)
wmctrl -r :ACTIVE: -e "1,$X2,$Y2,$X1,$Y1"
;;

leftbot)
wmctrl -r :ACTIVE: -e "1,0,$Y2,$X1,$Y1"
;;

*)
echo "Usage: $0 {left|right|up|down|righttop|lefttop|rightbot|leftbot}"
exit 1
;;

esac
exit 0