September 5, 2013

Wake On Lan through PowerShell

This morning I was asked to write a little script to do a WOL through PowerShell. Instead of writing it myself, I found this script.

As a scriptaholic I can’t just copy-paste and be done with it… I have to make it more suitable for my customer. 🙂
So, I’ve changed/added a few things.

A proper parameter
A little (crude) error handling
Allowing for multiple MAC addresses as input
Allowing for pipeline input
Just a few other things to make it more understandable for myself

Have fun!

function Send-WOL {
    param (
        [parameter(
            mandatory=$true,
            position=0,
            ValueFromPipeline=$true,
            ValueFromPipelineByPropertyName=$true)]
        [ValidateLength(17,17)]
        [ValidatePattern("^([0-9A-F]{2}[:-]){5}([0-9A-F]{2})$")]
        [array]$MACAddress
    )
    foreach ($MAC in $MACAddress) {
        try {
            $MAC = $mac.split(':') | %{ [byte]('0x' + $_) }
            $UDPclient = new-Object System.Net.Sockets.UdpClient
            $UDPclient.Connect(([System.Net.IPAddress]::Broadcast),4000)
            $Packet = [byte[]](,0xFF * 6)
            $Packet += $MAC * 16
            Write-Verbose ([bitconverter]::tostring($Packet))
            [void] $UDPclient.Send($Packet, $Packet.Length)
            Write-Output "WOL command sent to $MAC"
        } catch [system.exception] {
            Write-Output "ERROR: Unable to send WOL command to $MAC"
        }
    }
}

function Send-WOL {

param (

[parameter(

mandatory=$true,

position=0,

ValueFromPipeline=$true,

ValueFromPipelineByPropertyName=$true)]

[ValidateLength(17,17)]

[ValidatePattern("^([0-9A-F]{2}[:-]){5}([0-9A-F]{2})$")]

[array]$MACAddress

)

foreach ($MAC in $MACAddress) {

try {

$MAC = $mac.split(':') | %{ [byte]('0x' + $_) }

$UDPclient = new-Object System.Net.Sockets.UdpClient

$UDPclient.Connect(([System.Net.IPAddress]::Broadcast),4000)

$Packet = [byte[]](,0xFF * 6)

$Packet += $MAC * 16

Write-Verbose ([bitconverter]::tostring($Packet))

[void] $UDPclient.Send($Packet, $Packet.Length)

Write-Output "WOL command sent to $MAC"

} catch [system.exception] {

Write-Output "ERROR: Unable to send WOL command to $MAC"

}

One comment

Automated Backup with Robocopy, PowerShell and Symcon – Gee-Life.com says:

December 31, 2016 at 15:42

[…] found a very good working PowerShell snippet on Jeff Wouters’s blog here , so all the credit belongs to […]

JeffOps

Wake On Lan through PowerShell

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