Applescript to make a window jiggle back and forth at a configurable amplitude and frequency

jiggle.sh

#!/bin/bash

#the amount of time in between shakes in seconds
pause=$1
#amplitude is the amount of horizontal diplacement
amp=$2

window_width=800
#calculate the position of the right side of the window
x_pos_2=`expr $window_width + $amp`

while [ 1 ]
do
osascript -e "tell application \"Safari\" to set the bounds of the front window to {0, 22, $window_width, 1024}"
sleep $pause
osascript -e "tell application \"Safari\" to set the bounds of the front window to {$amp, 22, $x_pos_2, 1024}"
done