If you are running a headless ubuntu server as a media server that is on 24/7, you could be wasting several hours of energy - especially at night when no one is using it. To solve this problem, you can automatically shut it down and turn it on at certain time using
rtcwake. See below for step by step:
- Login as root and open `crontab`.
$ sudo su
$ crontab -e
- Add the command to
crontab.
# Shutdown at 12 AM and awake afer 8 hours (8:00 AM)
0 0 * * * sudo /usr/sbin/rtcwake -m disk -s 28800 > /var/log/crontab.log
