The Filter parameter on Get-CimInstance uses Windows Query Language (WQL).
Related: How to Use Where-Object to Filter all the Things The performance will be much faster instead due to the lack of overhead of processing unnecessary objects across the pipeline. There’s a motto in the PowerShell community that says “filter left.” If you have the chance, this saying means always filter output as far to the left as possible.ĭon’t use Where-Object unless you have to. When filtering WMI instances, it’s best to use the Filter parameter on Get-CimInstance. You must narrow down the NICs that have the IPEnabled property set to True, and you’ll have the adapter you’re looking for. When this property is set to True, the TCP/IP protocol is bound to this NIC, which is a prerequisite to having an IP address. On each adapter, you should see the IPEnabled property. Lots of output from The Win32_NetworkAdapterConfiguration class! To get this information, you’d use the Get-CimInstance cmdlet below, specifying the computer name ( REMOTECOMPUTER), the CIM class ( Win32_OperatingSystem), and referencing only the Caption property on the object. CIM holds the OS name in a property called Caption inside of the Win32_OperatingSystem class. Reusing a single session not only speeds up your script but also reduces code duplication.įor example, perhaps you’d like to find what operating system a remote Windows computer is running. When you’re building a PowerShell script using CIM to query various pieces of information, you should use a reusable CIM session. Use CIM to get an IP address when you’re building this task as part of a larger script. Related: PowerShell Remoting: The Ultimate Guide Using a session is an efficient way to authenticate to a computer once and reuse that connection repeatedly. When communicating with WMI with PowerShell, you can create a CIM session much like a PSRemoting session. WMI contains lots of system information that comes in handy when building scripts for inventory purposes. One of the most common reasons to use WMI over a single command like Get-NetIPAddress is when you’re already querying WMI. But why use WMI when you can use a single command? Why is it important to know this? Because you can query WMI directly yourself. When you run the Get-NetIPAddress cmdlet, PowerShell is actually querying WMI to retrieve that information. Look more on ipconfig at The Ipconfig Commands You Need to Know. If you’re not a fan of PowerShell, you can also use the ipconfig command to get an IP address. You’re done! Simply using PowerShell to get an IP address is a straightforward process, at least much more so than using other means. Getting the IP address from a specific adapter
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