Script using `wakeup` to use my computer as an alarm clock

wakeup.sh

TIME="07:30"
NEW_VOLUME="36%"
WAKE_VOLUME="45%"

# Check if the time is still today or tomorrow
if [ $(($(date -d "$TIME" +%s)-$(date  +%s))) -lt 0 ]
then
    TOMORROW="TOMORROW"
fi

# Got to sleep
sudo wakeup -a $(date -d "$TIME $TOMORROW" +%s)

# Wait a bit before playing with Alsa
sleep 2

# Turn the volume up
amixer -D pulse sset Master $WAKE_VOLUME
# Wake up my speakers with a low frequency sinus that is filtered anyway
pactl load-module module-sine frequency=30
sleep 4
pactl unload-module module-sine
# Put the volume back to normal
amixer -D pulse sset Master $NEW_VOLUME 

# Play some music here
# ...