TODO: echo 5 > /proc/acpi/sleep
``but be careful to stop any services, file systems, etc. before
powering off, e.g. use /sbin/halt instead.
Voir:
http://acpi.sourceforge.net/documentation/alarm.html),
http://acpi.sourceforge.net/documentation/sleep.html, http://www.suspend2.net/
Fabrice Rastello
2007-09-03
