Wake On LAN

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See if your equipment support “Wake On LAN” feature:

$ ethtool enp0s25 | grep "Wake"
Cannot get wake-on-lan settings: Operation not permitted

If you got this feature, then install wol:

$ pacman -S wol

Record the mac address of your equipment which you want to wake up, in a living machine, if you want to wake it, simply use following command:

# wol -i HOSTNAME_OR_IP MACADDRESS

The next consideration is, how to keep a wake-up equipment 24-hours, I suggest you use BeagleBone or Raspberry PI, or you can research how to use arduino and write your own applications.