posts-powershell

If you've ever wanted to know all IP addresses assigned to a machine, you should use WMI: Get-WMIObject win32_NetworkAdapterConfiguration |...

Select-Object will select the object properties that you want to see. So it removes all properties you did not specify, but it always returns an...

PowerShell can easily provide a range of numbers, but creating them is not that easy - unless you convert ascii codes into characters: 65..90 |...

When you query the values of a registry key, PowerShell will add a bunch of artifacts to the results. You'll get some new properties that all...

Have a look at this line – do you see what's wrong with it? Get-WMIObject Win32_UserAccount | Where-Object { $_.Name = 'Guest' } PowerShell will use...

You can use a keyword search with WMI to find a specific service. The next line will get you all services with the keyword "cert" in its...

If you'd like to speed up things, you should try to filter server side instead of client side whenever you query information. For example, this...

You can use $null as a special variable representing "nothing." You can use it to identify (and sort out) non-existing data like so:...

Some operations will take more time so it is a good idea to return feedback. Write-Progress can do just that. Go ahead and add a Foreach-Object to...

Often, feedback or votes on Web pages are sent back via POST requests. You can send this kind of information via PowerShell as well. You should...

When you are ready to connect or disconnect a network adapter, you can utilize the Shell.Application COM object, which will give you access to...

You may need to find the largest files for possible clean-up when free space on a drive runs low. One way is to have PowerShell examine all file...

Get-Random has a dual purpose. It can provide you with a random number and also pick random elements from a collection. So, if you want to get a new...

You can use Sort-Object to sort simple variable types. Have a look at the following: 'Tom', 'Chris', 'Judy', 'Alan'...

When you create new Aliases with Set-Alias, PowerShell does not check whether the target you specify is valid. Instead, this is checked only when...

You should try this to get all IPv4 addresses assigned to your system: Get-WMIObject win32_NetworkAdapterConfiguration | Where-Object { $_.IPEnabled...

You should use this to retrieve all IP addresses assigned to your computer: Get-WMIObject win32_NetworkAdapterConfiguration | Where-Object...

One easy way of creating lists of PC names or IP address ranges etc is a simple pipeline like this: 1..40 | Foreach-Object {...

Another way is to ConvertTo-HTML is a convenient way of converting object results in HTML. However when you open these files, your browser starts...

Whenever you use Get-WMIObject, be sure to minimize resources and maximize speed by using server-side filtering. The next line will use the slow...

Using Get-Hotfix is pretty convenient as it serves to list installed updates. Unfortunately, it is not very thorough as it doesn’t retrieve...

When using the additional cmdlets in the BitsTransfer module that comes with Windows 7 and Server 2008 R2, you can make downloads happen silently in...

Windows 7 and Server 2008 R2 come with a module called BitsTransfer, which allows you to access the background intelligent transfer service used by...

Snapins and modules can add new cmdlets and/or providers to PowerShell. Use this if you would like to see the list of available Snapins:...

You should remember that registry values are treated like properties to a registry key so they have no specific path and you cannot use Test-Path to...

If you would like to test whether a certain registry key exists, you should remember that all registry keys are treated like folders on a drive, so...

In PowerShell, functions can be constant to prevent them from being deleted anymore, which is necessary if you must protect security-critical...

Functions that you define are read/write and can easily be overwritten. You can set the read-only attribute to make a function read-only so that you...

Each registry key has a default value. It is called (default) when you look into regedit. To read this default value, you can just use this name...

Get-ItemProperty reads registry values. You can create a software inventory in just one line since it supports wildcards: Get-ItemProperty...