Hi,
i want to wake up and sleep/shutdown/hiberante my PC at specifide times. I googled some places, and came to know that you have to edit/change /sys/class/rtc/rtc0/wakealarm
1.what is that?
2.how and what do i do to it?

is there any alternative/easier/different way of *atleast* waking up my computer? i dont mind if i cant put it to sleep, waking it is more imp.