PowerShell 技能连载 - 局域网唤醒

无需外部“局域网唤醒”工具了。如果要唤醒网络计算机,只需告诉 PowerShell 目标计算机的 MAC 地址即可。这是一个组成 magic packet 并唤醒机器的函数:

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function Invoke-WakeOnLan
{
param
(
# one or more MAC addresses
[Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)]
# MAC address must be a following this regex pattern
[ValidatePattern('^([0-9A-F]{2}[:-]){5}([0-9A-F]{2})$')]
[string[]]
$MacAddress
)

begin
{
# instantiate a UDP client
$UDPclient = [System.Net.Sockets.UdpClient]::new()
}
process
{
foreach ($_ in $MacAddress)
{
try {
$currentMacAddress = $_

# get byte array from MAC address
$mac = $currentMacAddress -split '[:-]' |
# convert the hex number into byte
ForEach-Object {
[System.Convert]::ToByte($_, 16)
}

#region compose the "magic packet"

# create a byte array with 102 bytes initialized to 255 each
$packet = [byte[]](,0xFF * 102)

# leave the first 6 bytes untouched, and
# repeat the target MAC address bytes in bytes 7 through 102
6..101 | ForEach-Object {
# $_ is indexing in the byte array,
# $_ % 6 produces repeating indices between 0 and 5
# (modulo operator)
$packet[$_] = $mac[($_ % 6)]
}

#endregion

# connect to port 400 on broadcast address
$UDPclient.Connect(([System.Net.IPAddress]::Broadcast),4000)

# send the magic packet to the broadcast address
$null = $UDPclient.Send($packet, $packet.Length)
Write-Verbose "Sent magic packet to $currentMacAddress..."
}
catch
{
Write-Warning "Unable to send ${mac}: $_"
}
}
}
end
{
# release the UDP client and free its memory
$UDPclient.Close()
$UDPclient.Dispose()
}
}

运行该函数后,可以通过以下方法唤醒计算机:

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Invoke-WakeOnLan -MacAddress '24:EE:9A:54:1B:E5', '98:E7:43:B5:B2:2F' -Verbose

要找出目标机器的MAC地址,请在目标机器上运行此行代码或通过远程处理:

1
Get-CimInstance -Query 'Select * From Win32_NetworkAdapter Where NetConnectionStatus=2' | Select-Object -Property Name, Manufacturer, MacAddress

可以在这里找到更多信息:https://powershell.one/code/11.html

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