I had a closer look, and start to suspect that the rtcwake command is operating on the same setting as the acpiwakeup() method in the shutdown-at-night shell script:
# This method might not work if the hardware clock is updated during # shutdown. Changing /etc/default/hwclock to list HWCLOCKACCESS=yes # to disable it. # Based on <URL: http://www.mythtv.org/wiki/ACPI_Wakeup > acpiwakeup() { wakeuptime="$1" if [ -e /sys/class/rtc/rtc0/wakealarm ] ; then when=$(whentowakeup $wakeuptime) # First reset alarm echo 0 > /sys/class/rtc/rtc0/wakealarm # Next, set it to our selected time echo $when > /sys/class/rtc/rtc0/wakealarm logger -t shutdown-at-night "scheduled $hostname to turn itself on at $wakeuptime using /sys/class/rtc/rtc0/wakealarm." return 0 else return 1 fi } If this is correct, using rtcwake might make this code simpler, but not add a new way to get the machine to wake up in the morning, which was my original motivation for creating this issue. -- Happy hacking Petter Reinholdtsen
