PowerShell/Docs/wake-up.md

## The *wake-up.ps1* Script

This PowerShell script sends a magic UDP packet twice to a computer to wake him up (requires the target computer to have Wake-on-LAN activated).

## Parameters
```powershell
/home/mf/Repos/PowerShell/Scripts/wake-up.ps1 [[-MACaddress] <String>] [[-IPaddress] <String>] [[-Port] <Int32>] [[-NumRetries] <Int32>] [<CommonParameters>]

-MACaddress <String>
    Specifies the host's MAC address (e.g. 11:22:33:44:55:66)
    
    Required?                    false
    Position?                    1
    Default value                
    Accept pipeline input?       false
    Accept wildcard characters?  false

-IPaddress <String>
    Specifies the host's IP address or subnet address (e.g. 192.168.0.255)
    
    Required?                    false
    Position?                    2
    Default value                
    Accept pipeline input?       false
    Accept wildcard characters?  false

-Port <Int32>
    Specifies the UDP port (9 by default)
    
    Required?                    false
    Position?                    3
    Default value                9
    Accept pipeline input?       false
    Accept wildcard characters?  false

-NumRetries <Int32>
    Specifies number of retries (3 by default)
    
    Required?                    false
    Position?                    4
    Default value                3
    Accept pipeline input?       false
    Accept wildcard characters?  false

[<CommonParameters>]
    This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, 
    WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
```

## Example
```powershell
PS> ./wake-up.ps1 11:22:33:44:55:66 192.168.100.100

```

## Notes
Author: Markus Fleschutz | License: CC0

## Related Links
https://github.com/fleschutz/PowerShell

## Source Code
```powershell
<#
.SYNOPSIS
	Wakes up a computer using Wake-on-LAN
.DESCRIPTION
	This PowerShell script sends a magic UDP packet twice to a computer to wake him up (requires the target computer to have Wake-on-LAN activated).
.PARAMETER MACaddress
	Specifies the host's MAC address (e.g. 11:22:33:44:55:66)
.PARAMETER IPaddress
	Specifies the host's IP address or subnet address (e.g. 192.168.0.255)
.PARAMETER Port
	Specifies the UDP port (9 by default)
.PARAMETER NumRetries
	Specifies number of retries (3 by default)
.EXAMPLE
	PS> ./wake-up.ps1 11:22:33:44:55:66 192.168.100.100
.LINK
	https://github.com/fleschutz/PowerShell
.NOTES
	Author: Markus Fleschutz | License: CC0
#>

param([string]$MACaddress = "", [string]$IPaddress = "", [int]$Port=9, [int]$NumRetries=3)
	
function Send-WOL { param([string]$mac, [string]$ip, [int]$port) 
	$broadcast = [Net.IPAddress]::Parse($ip) 
  
	$mac=(($mac.replace(":","")).replace("-","")).replace(".","") 
	$target=0,2,4,6,8,10 | % {[convert]::ToByte($mac.substring($_,2),16)} 
	$packet = (,[byte]255 * 6) + ($target * 16) 
  
	$UDPclient = new-Object System.Net.Sockets.UdpClient 
	$UDPclient.Connect($broadcast,$port) 
	[void]$UDPclient.Send($packet, 102)  
} 

try {
	if ($MACaddress -eq "" ) { $MACaddress = Read-Host "Enter the host's MAC address (e.g. 11:22:33:44:55:66)"	}
	if ($IPaddress -eq "" ) { $IPaddress = Read-Host "Enter the host's IP address or subnet address (e.g. 192.168.0.255)" }

	Send-WOL $MACaddress $IPaddress $Port
	for ($i = 0; $i -lt $NumRetries; $i++) {
		Start-Sleep -milliseconds 100
		Send-WOL $MACaddress $IPaddress $Port
	}
	"✔️ sent magic packet $MACaddress to IP $IPaddress on port $Port ($NumRetries retries)"
	exit 0 # success
} catch {
	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
	exit 1
}
```

*Generated by convert-ps2md.ps1 using the comment-based help of wake-up.ps1*