Any way to rig up a noise prior to computer power off through internal speaker for headless Zentyal machines?
Edit: Well i figured it out myself mostly, borrowed bits from
https://myubuntublog.wordpress.com/tag/shutdown-sound/ sudo apt-get install beep
chmod o+x 'which beep'
*quick test and beep plays through internal speaker*
sudo nano /etc/init.d/K99shutdownsound.sh
#!/bin/sh
beep -f 300.7 -r 2 -d 100 -l 400
*save it*
chmod +x /etc/init.d/K99shutdownsound.sh
sudo ln -s /etc/init.d/K99shutdownsound.sh /etc/rc0.d/K99shutdownsound.sh
sudo ln -s /etc/init.d/K99shutdownsound.sh /etc/rc6.d/K99shutdownsound.sh