Mac OS X で Growl が暴走したときに再起動 ref: http://qiita.com/items/1302

growl_restart

#!/bin/bash

PID=$(ps ax | grep Growl.app | grep -v grep | awk '{print $1};')
test -z "$PID" && open -j -a Growl && echo "Growl restarted on $(date) :: pid not found ($PID)" >> /tmp/growl_restart.log && exit

CPU_USAGE=$(top -pid $PID -l 2 -s 5 -stats cpu | tail -n1 | cut -d"." -f1)
if test $CPU_USAGE -gt 80
then
    killall Growl
    open -j -a Growl
    echo "Growl restarted on $(date) :: pid=$PID" >> /tmp/growl_restart.log
fi