An Acronym for Wake On Lan.

A setting that allows a machine to be powered on when a special ethernet frame is received on the network card.

You will need to enable WOL in the machine's BIOS, and you will need to know the ethernet card's MAC address.

Then, (from another machine) you can use the ether-wake package to send the special ethernet frame. On debian: apt-get -u install etherwake.

Then from the command line, you can do

$ ether-wake <macaddress>

Or you can add an entry to /etc/ether with macaddress to hostname entries and just do

$ ether-wake <hostname>

Simple!

Owl lived at The Chestnuts, and old-world residence of great charm, which was grander than anybody else's, or seemed so to Bear, because it had both a knocker and a bell-pull. Underneath the knocker there was a notice which said:

PLES RING IF AN RNSER IS REQIRD.

Underneath the bell-pull there was a notice which said:

PLEZ CNOKE IF AN RNSR IS NOT REQID.

These notices had been written by Christopher Robin, who was the only one in the forest who could spell; for Owl, wise though he was in many ways, able to read and write and spell his own name WOL, yet somehow went all to pieces over delicate words like MEASLES and BUTTEREDTOAST.