Use powershell to set an environment variable (LOCID) based on what IP range the computer is in or t-CodePudding

I've been using a cmd/batch file to create a locationid variable based on what IP range the computer is in. I need to do a similar function using powershell. Any advise would be welcomed.

As an example of the code I'm using in the batch file:

For /F "Delims==" %%G In ('Set octet 2^>NUL')Do Set "%%G="
For /F "Tokens=2 Delims=:" %%G In (
'"%__AppDir__%ipconfig.exe 2>NUL|%__Appdir__%find.exe "IPv4""'
)Do For /F "Tokens=1-4Delims=. " %%H In ("%%G"
)Do Set "octet1=%%H"&Set "octet2=%%I"&Set "octet3=%%J"&Set "octet4=%%K"
Set octet>NUL 2>&1||(Echo IPConfig failed to retrieve an IP address.
Pause&GoTo :EOF)
Set "BuildingLOC="
If %octet1% Equ 10 If Defined octet2 (
If %octet2% GEq 6 If %octet2% LEq 7 Set "BuildingLOC=VM" 
If %octet2% GEq 10 If %octet2% LEq 19 Set "BuildingLOC=ADM"
)

CodePudding user response：

Working with IP Octets:

function Get-HostIP {
    [CmdletBinding()]
    [OutputType([string])]
    param ()
    # https://stackoverflow.com/a/44685122/4190564
    $Return = ( 
        Get-NetIPConfiguration | Where-Object {
            $null -ne $_.IPv4DefaultGateway -and $_.NetAdapter.Status -ne "Disconnected"
        }
    ).IPv4Address.IPAddress
    return $Return
}
Function Get-IPOctets {
    [CmdletBinding()]
    [OutputType([int[]])]
    param (
        [Parameter(Mandatory = $true, Position = 0)]
        [string]$IPAddress
    )
    if( $IPAddress -match '(?<Octet1>\d )\.(?<Octet2>\d )\.(?<Octet3>\d )\.(?<Octet4>\d )') {
        return $Matches.Octet1, $Matches.Octet2, $Matches.Octet3, $Matches.Octet4
    } else {
        return 0, 0, 0, 0
    }
}
$Octet1, $Octet2, $Octet3, $Octet4 = Get-IPOctets (Get-HostIP)
if($Octet1 -eq 10) {
    switch ($Octet2) {
        {$_ -in 6..7} {$BuildingLOC = 'VM'; break}
        {$_ -in 10..19} {$BuildingLOC = 'ADM'; break}
        default {$BuildingLOC = 'Other'; break}
    }
} else {
    $BuildingLOC = 'Invalid'
}
Write-Host "IPType: $BuildingLOC"

Working with first 3 letters of Computer Name:

if($HostName = [System.Net.Dns]::GetHostName()) {
    if($HostName.Substring(0, 3) -eq 'ABC') {
        Write-Host "Computer name matches"
    } else {
        Write-Host "Computer name does not match "
    }
} else {
    Write-Host "No computer name"
}