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Signals and semaphores
Post 302450588 by achenle on Friday 3rd of September 2010 06:12:36 AM
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Dear Reader,
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Hi there,
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Hello,
I was doing an exercise of semaphores and shared memory, namely the barbers:
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LEARN ABOUT NETBSD
wakeonlan
WAKEONLAN(8) BSD System Manager's Manual WAKEONLAN(8) NAME
wakeonlan -- send Wake on LAN frames to hosts on a local Ethernet network SYNOPSIS
wakeonlan [interface] lladdr [lladdr ...] DESCRIPTION
The wakeonlan program is used to send Wake on LAN (WoL) frames over a local Ethernet network to one or more hosts using their link layer (hardware) addresses. WoL functionality is generally enabled in a machine's BIOS and can be used to power on machines from a remote system without having physical access to them. interface is an Ethernet interface of the local machine and is used to send the Wake on LAN frames over it. If there is only one Ethernet device available that is up and running, then the interface argument can be omitted. lladdr is the link layer address of the remote machine. This can be specified as the actual hardware address (six hexadecimal numbers separated by colons) or as a hostname entry in /etc/ethers. wakeonlan accepts multiple lladdr addresses. Link layer addresses can be determined and set using ifconfig(8). FILES
/etc/ethers Ethernet host name data base. SEE ALSO
ethers(5), ifconfig(8) AUTHORS
wakeonlan was written by Marc Balmer <marc@msys.ch>. BSD
May 25, 2012 BSD