script to start forever after reboot

reboot.sh

#!/bin/sh
if [ $(ps aux | grep $USER | grep node | grep -v grep | wc -l | tr -s "\n") -eq 0 ]
then
        export NODE_ENV=production
        export PATH=/usr/local/bin:$PATH
        forever start ~/vizilinkz/server.js > /dev/null
        # redirects port 80 to port 8080
        iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-ports 8080
fi