PowerShell 3.0 introduces a new family of NetAdapter of cmdlets. Get-NetAdapter is the default, and its job is to enumerate your computer’s network cards (NICs).
Tutorial for Get-NetAdapter
- The Magic of PowerShell’s NetAdapter
- Simple Example of Get-NetAdapter
- Research NetAdapter Properties
- How to Enable or Disabled Your NIC
- Research The NetAdapter Cmdlet Family
To appreciate the elegance of Get-NetAdapter, you have to experienced the uglyness of enumerating network cards using NetSh or VBScript; even with PowerShell 2.0’s Get-WmiObject Win32_NetworkAdapterConfiguration it wasn’t easy to list NICs.
One aspect of elegance that I admire, especially in scripting, is simplicity. Therefore to get started all you need is the command: Get-NetAdapter.
# PowerShell 3.0 lists all your computer’s network cards.
Note 1: You can find more properties by piping the output into | Get-Member.
Important: Adjust the value of my $Nic variable depending on the results of the simple: Get-NetAdapter command.
$Nic = "Wi-Fi"
Get-NetAdapter -name $Nic | Format-List Name,`
InterfaceDescription, DeviceName, DeviceWakeupEnable,`
LinkSpeed, NetworkAddress, PromiscuousMode, Status
Note 2: Take care with the ` backtick; in particular avoid spaces after this command that tells PowerShell to word-wrap to the next line.
Note 3: Here is an even better plan, research your own properties with:
Get-NetAdapter | Get-Member
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Understanding Get-NetAdapter’s Parameters
Employing the -name parameter is a precise method for specifying the network card, and it saves me having to use Powershell’s Where-Object statement to filter the network cards.
Let us call for Get-Help and see which other parameters are available for the Get-NetAdapter cmdlet.
#PowerShell NetAdapter parameter research
Results: I found two interesting parameters -IncludeHidden and -physical.
Once you have discovered a useful PowerShell cmdlet such as Get-NetAdapter it’s worth investigating alternative verbs; this is how I discovered Enable, Disable and Restart-NetAdapter.
Get-Command -Noun netadapter
CommandType Name ModuleName
———– —— ————
Function Disable-NetAdapter NetAdapter
Function Enable-NetAdapter NetAdapter
Function Get-NetAdapter NetAdapter
Function Rename-NetAdapter NetAdapter
Function Restart-NetAdapter NetAdapter
Function Set-NetAdapter NetAdapter
Here is an example to disable the Wi-Fi’s network adapter.
# PowerShell script to disable your network card.
$Nic = ‘Wi-Fi’
Disable-NetAdapter -Name $Nic
Note 4: To reverse the action substitute Enable-NetAdapter for Disable-Network adapter.
Note 5: See more on PowerShell’s Disable-NetAdapter.
PowerShell’s default verb is ‘Get’. Thus, my challenge is to substitute plain NetAdapter for Get-NetAdapter in the above examples. Actually, I regard this shortcut as sloppy scripting, but it does explain why other PowerShell commands work the way they do, for example:
… is really ‘Get-Help’ Disable-NetAdapter, but as ‘Get’ is the default verb, the shorter form works.
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- Launch PowerShell (Preferably the ISE version)
- Copy the lines of code in the above examples (into memory).
- Right-click in the top pane.
More PowerShell v 3.0 Networking Cmdlets
One way to discover more about the new version 3 cmdlets is to look at the ‘Modules’ section of PowerShell ISE’s Commands pane.
Summary of PowerShell Get-NetAdapter
PowerShell 3.0 introduces a new family of NetAdapter cmdlets which manipulate a computer’s NICs. This page shows you how to research the properties of your network card(s).
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