Custom IP Object

I recently needed a function that would get the 3rd octet from a group of computers to determine what subnet that computer was on. (Class C)

I had a VBScript that could do this but didn't have anything in PoSh. I decided the best way to do this was to create a custom object to easily get to the octet I needed. Doing it with a PS object provides the ability to select which octet you wanted back. Here is the function.

   1:  function get-ip {

   2:      param ([string]$computer = '.')

   3:      if ($computer -eq '.') {$computer = $env:computername}

   4:      

   5:      # Create custom object

   6:      $objIP = New-Object -typeName 'psobject'

   7:      

   8:      # Connect to WMI and retrieve IP from NetworkAdapterConfiguration Class

   9:      [string]$IP = (gwmi win32_networkadapterconfiguration -computerName $computer | ? { $_.IPEnabled -eq $true }).IPAddress

  10:      

  11:      # Split on the '.' to get each octet

  12:      $octets = $IP.split(".")

  13:  

  14:      # Add octets,ip and computername to the custom object

  15:      Add-Member -inputObject $objIP -memberType 'Noteproperty' -name "1stOct" -value $octets[0]

  16:      Add-Member -inputObject $objIP -memberType 'Noteproperty' -name "2ndOct" -value $octets[1]

  17:      Add-Member -inputObject $objIP -memberType 'Noteproperty' -name "3rdOct" -value $octets[2]

  18:      Add-Member -inputObject $objIP -memberType 'Noteproperty' -name "4thOct" -value $octets[3]

  19:      Add-Member -inputObject $objIP -memberType 'Noteproperty' -name "FullIPv4" -value $ip

  20:      Add-Member -inputObject $objIP -memberType 'Noteproperty' -name "ComputerName" -value $computer

  21:  

  22:      return $objIP

  23:  }

So now you can get whatever octet by using select-object. The function can take an argument named Computer so you can retrieve remote computer addresses/octets as well.

Sjdelatorre@JDELATORRE {~} get-ip

1stOct : 192
2ndOct : 168
3rdOct : 251
4thOct : 46
FullIPv4 : 192.168.251.46
ComputerName : JDELATORRE

Sjdelatorre@JDELATORRE {~} get-ip | select 3rdoct

3rdOct
------
251

Sjdelatorre@JDELATORRE {~} get-ip | select 3rdoct,fullipv4,computername

3rdOct FullIPv4 ComputerName
------ -------- ------------
251 192.168.251.46 JDELATORRE

Sjdelatorre@JDELATORRE {~} get-ip -computer jdelatorreVPC | select 3rdoct,fullipv4,computername

3rdOct FullIPv4 ComputerName
------ -------- ------------
251 192.168.251.67 jdelatorreVPC

Sjdelatorre@JDELATORRE {~}