posts-powershell

In the previous tip, we illustrated how you can use Registry information to find wireless network adapters. Here is now a function...

There are many ways of finding network adapters, but apparently none to identify active wireless adapters. All information about your network...

When a cmdlet returns raw data, you may want to convert the data into a better format. For example, WMI can report the free space of a drive but...

WMI can retrieve information about drives easily. This will get you the drive information for your local machine (use -ComputerName to access a...

Relative dates are important to get data within a special time frame, avoiding hard-coded dates and times. This script will get all error and...

You can easily convert object results to CSV files in PowerShell. This generates a CSV report of current processes: To open the CSV file in...

Often, you might want to browse all system events around a given date. Let's say a machine crashed at 08:47, and you'd like to see all...

Many mobile phone service providers offer public hotspots at airports and public places. To connect, you typically need to browse to a logon page,...

If you must make sure that a given string has a uniform width, then you can use .NET methods to pad the string appropriately: $mytext =...

Often, users need to format numbers and limit the number of digits, or add leading zeros. There is one simple and uniform strategy for this: the...

Sort-Object has an awesome feature: with the parameter -Unique, you can remove duplicates: This can be applied to object results, as well. Check out...

You can run PowerShell code in any host, and Windows ships with powershell.exe and powershell_ise.exe. Many prefer the graphical ISE editor over the...

There may be the need to add additional information to command results. Maybe you get data from different machines and want to keep a reference...

Select-Object has a parameter called -First that accepts a number. It will then return only the first x elements. Sounds simple, and it is. This...

To insert a variable into a string, you probably know that you can use double quotes like this: $domain = $env:USERDOMAIN $username = $env:USERNAME...

PowerShell is not just an automation language but also an alternate user interface. If you do not like the graphical interface, educate PowerShell...

Comparison operators act like filters when applied to arrays. So any console command that outputs multiple text lines can be used with comparison...

When you launch an EXE file, PowerShell will happily start it, then continue and not care about it anymore: If you'd like to keep a handle to...

Beginning in PowerShell 3.0, there is a new automatic variable available called $PSScriptRoot. This variable previously was only available within...

You probably know that Set-AuthenticodeSignature can be used to digitally sign PowerShell scripts. But did you know that this cmdlet can sign...

When you use Where-Object to filter information by date or time, this works actually very well--provided you use the correct filtering format. Do...

When you develop PowerShell scripts in the PowerShell ISE editor, you should run the final tests in a clean environment, making sure that no...

Get-PfxCertificate can import digital certificates from a PFX file. However, it can only retrieve one certificate. So if your PFX file contains more...

When you try PowerShell Remoting, you may run into connection errors just because your machine name was not fully qualified. Kerberos authentication...

Let's assume you have created this function: function Test-Function { param ( [Parameter(Mandatory=$true)] $ServerPath ) "You selected...

You can use Get-PfxCertificate to load digital certificates from PFX files, and then use the certificate to sign script files, for example: $pfxpath...

PowerShell can read environment variables easily. This returns the current windows folder: $env:windir However, if you want to make permanent...

Typically, when you mark a function parameter as "mandatory", PowerShell will prompt the user when the user omits the parameter: function...

You may not be aware of this, but PowerShell uses a different decimal delimiter for input and output - which may cause confusions to script users....