How to automate "wake over lan" from a linux client

Paul2010 · 23. September 2014

Hi to all !

I'm about to replace my Windows Homeserver and am looking to achieve the same level of comfort as before with my Windows Machines.

Therefore I need a simple way to wake up my OMV NAS via LAN when one of my notebooks is connected to my Home-LAN via WiFi and ready to issue the wol command.
My clients are Ubuntu based systems: Linux Mint 17 and Peppermin OS.

1) What is the best way of sending the wol command / Magic Packet without user interaction.
2) Where do I issue the wol command.
3) How do I check for WiFi connection prior to issuing the wol command.
4) Does anyone already have such a script / solved my problem ?

Thanx in advance!

ryecoaaron · 23. September 2014

On linux, install the etherwake package and then issue the following command from the command line (substitute MACADDRESS for your server's mac address): etherwake -b MACADDRESS

tekkb · 23. September 2014

Here is one I use for my office. You could tailor it for your needs. The etherwake package is used in conjunction with this.

Bash

#!/bin/sh


desktop=00:BF:30:GB:5C:24
server=00:67:54:FD:TC:87


while [ "$input1" != quit ]; do
echo "Which machine would you like to wake?"
echo "press d for Desktop"
echo "press s for Server"
echo "press q to Quit"
read input1
if [ $input1 == d ]; then
        ether-wake -b $desktop
        echo "magic packet sent.  Now exiting WOL script..."
        exit 1
fi


if [ $input1 == s ]; then
        ether-wake -b $server
        echo "magic packet sent to Server now exiting WOL script..."
        exit 1
fi


if [ $input1 == q ] || [ $input1 == Q ]; then
        echo "Bye!"
        exit 1
fi


done
echo "Fini!!!"

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Paul2010 · 23. September 2014

Thanx for your replies, but I'm looking for an automatic wake up, as soon as my laptop has finished booting and is connected to LAN via wifi.
Do you happen to have a script for that? Or an idea of where to start looking?

subzero79 · 23. September 2014

Zitat von Paul2010

Thanx for your replies, but I'm looking for an automatic wake up, as soon as my laptop has finished booting and is connected to LAN via wifi.
Do you happen to have a script for that? Or an idea of where to start looking?

You can put your command etherwake at /etc/rc.local with some sleep timer so that it waits for the network. I personally use the a cron command in my router (7AM) and smartphone app for manual.

tekkb · 23. September 2014

Ignore my script above if you want to do as Sub says. That is better route for what you are thinking.

subzero79 · 24. September 2014

If you want something more fancy take a look at serverfault.com for some bash host alive checks (like the router ip address or your own assigned one).

Paul2010 · 24. September 2014

Thanx for your replies !

I will start with an etherwake call from within /etc/rc.local and see how far I get. Then I will include a network check into my script prior to the etherwake call. But this will require some more reading and understanding on my side .

Solo0815 · 24. September 2014

you can do something like this:

Bash

while true; do ping -c1 www.google.com > /dev/null && break; done
etherwake MACADRESS

this will wait, until ping to google is successful and etherwake your client

Jetzt mitmachen!