I know how to send WOL command using Linux or FreeBSD wake command. But, how do I send Wake on LAN (WOL) frames to hosts on a local Ethernet network using Apple OS X Unix operating systems to wake up my servers or nas devices?
You need to use the wakeonlan Perl script that generates and transmits a Wake-On-LAN (WOL) “Magic Packet”, used for restarting machines that have been soft powered-down (ACPI D3-warm state).
Method #1: Install wakeonlan using Homebrew
Open the Terminal app and type the following command:
brew install wakeonlan
Fig.01: OS X brew install wakeonlan client
Method #2: Download and install wakeonlan Perl script
Open a terminal and type the following curl command:
$ mkdir -p $HOME/bin
$ curl https://raw.githubusercontent.com/jpoliv/wakeonlan/master/wakeonlan -o ~/bin/wakeonlan
$ chmod +x ~/bin/wakeonlan
How do I send WOL on a OS X?
The syntax is:
$ ~/bin/wakeonlan server-mac-address-here
For example, if nas01 server has 00:08:9b:c4:30:30 mac address, enter:
$ ~/bin/wakeonlan 00:08:9b:c4:30:30
Sending magic packet to 255.255.255.255:9 with 00:08:9b:c4:30:30
set the destination IP address
default: 255.255.255.255 (the limited broadcast address)
set the destination port
default: 9 (the discard port)
uses file as a source of hardware addresses
Apple computer wake for network access (WOL) setting
If you want other users to be able to access your Apple OS X based computerâ€™s shared resources, such as shared printers/files/folders or iTunes playlists, even when your computer is in sleep mode. Open System Preferences > choose “Energy Saver preferences“. This set options that control your computerâ€™s energy use including WOL for all Mac Based server and client systems:
Fig.01: OS X setting WOL
Make sure you select the option “Wake for network access” so that other users can wake up your computer using WOL magic packet.
wakeonlan(1) for more information.
Download Wakeonlan: Perl script for waking up computers via Wake-On-LAN magic packets
HowTo: Wake Up Computers Using Linux Command [ Wake-on-LAN ( WOL ) ]