Start a Server on boot.

[DoxramosPS]

I'm trying to get a server restarter to automatically restart on System boot on Ubuntu 12.04; I'm not sure why it's not working at this point and was hoping someone here may be able to help.
I have my restarter itself in /opt/startup
I'll go through the steps I took in order in the hopes that someone might be able to spot the flaw.

cd /opt/startup
sudo touch authserver
sudo nano authserver 
__________________
until /opt/DoxCore/bin/authserver -c /opt/DoxCore/etc/authserver.conf 2>&1;
do date && echo "Authentication Server died with exit code $?. Restarting Now...."
sleep 1;
done;
Ctrl+O -->Save |Ctrl+X-->Exit

sudo chmod 7 authserver
crontab -e
//Scroll to bottom of crontab file and entered in:
@reboot screen -dmS authserver
@reboot cd /opt/startup
@reboot ./authserver > /dev/null
Ctrl+O-->Save | Ctrl+X-->Exit
sudo reboot

After the reboot I attach to the screen authserver and the only line of code there is

$

Which tells me the program never executed; Any ideas on what's going on here?
When I move to /opt/startup and manually ./authserver it starts the authserver; any help would be appreciated.

[abuckau907]

(I don't use Ubuntu - take with a grain of salt)

Maybe not a programmatic way to do it, but, google says

1. Go to System –> Preferences –> Startup Applications

2. Drag and drop any program into this list

a) may be an 'Add' button --> click it, browse to your app, select it and hit ok.

Kind of the cheese-ball way of doing it imo, but might work.

you're using the command prompt/shell, so I assume you have pretty good knowledge of linux.
You probably already tried it the way I mentioned?