The computer (running Ubuntu 14.04) is connected to a networked device which controls the power supply to the computer itself.
On receiving a certain
signal A, the computer must send a
signal B to this networked device which (among other stuff) will cut power to the computer.
When should I send this
signal B to the networked device so as to minimize the damage done from the power cut?
I assume I can trigger the shutdown sequence with
signal A and somewhere along the shutdown sequence, send
signal B. But when should I actually send it?
I assume my
/etc/rc0.d would look something like below
K98signalB # Actually sends signalB to cut power K99networking # Renamed from K01networking, since I need to keep networking alive