I want to make a Linux application that send a message to a remote host when a local system (where the application runs) is going to suspend, hibernate or shutdown. I googled how to do this and found acpi_listen but it doesn t work.
Here is the result of ps aux | grep acpi on the system I tested (Ubuntu 10.04 LTS):
root 35 0.0 0.0 0 0 ? S Dec03 0:00 [kacpid]
root 36 0.0 0.0 0 0 ? S Dec03 0:00 [kacpi_notify]
root 37 0.0 0.0 0 0 ? S Dec03 0:00 [kacpi_hotplug]
root 934 0.0 0.0 2048 872 ? Ss Dec03 0:00 acpid -c /etc/acpi/events -s /var/run/acpid.socket
Communicating with acpid directly via a UNIX domain socket wouldn t work since that s the way acpi_listen works, although I didn t try it. Is there any other way?