xcode_watch.sh

#!/bin/bash
#
# Throw this in your crontab.
#
# https://twitter.com/#!/manton/status/111893189971017729
#

BOSS=boss@example.org
CPU_THRESHOLD=1500

kill_xcode_and_email () {
  kill -9 $(ps aux | grep /[X]code | awk '{print $2}');
  if [ -n "$BOSS" ]; then
      echo "I'm taking the rest of the day off." \
	  | mail -s "Because of XCode..." $BOSS;
  fi
}

xcodeline=$(ps aux | grep /[X]code)
if [ -n "$xcodeline" ]; then
    cpu=$(echo $xcodeline | awk '{print $3}' | sed -e 's/\..*//g')
    if [ "$cpu" -gt $CPU_THRESHOLD ]; then
	kill_xcode_and_email
	exit 0
    fi
fi