Wakeup Test Script

#!/bin/sh

# Save all of this in a file named wakeup_test.sh (or any name you like)
# Make the file executable: chmod a+x wakeup_test.sh
# Run the file with: sudo ./wakeup_test.sh
# Shutdown the system with: sudo shutdown -h now
# Expect wakeup in 60 seconds.

ALARM_FILE="/sys/class/rtc/rtc0/wakealarm"
ALARM_STAT="/proc/driver/rtc"

WAKEUP_TIME=$((`date +'%s'` + 60))

echo 0 > ${ALARM_FILE}
RC=$?
if [ ${?} -ne 0 ]; then
    echo "ERROR: Can't write to ${ALARM_FILE}, RC = ${RC}"
    exit 2
fi
echo ${WAKEUP_TIME} > ${ALARM_FILE}
cat ${ALARM_STAT}