Powershell

Here is a PowerShell function called Lock-Screen that can lock the screen and prohibit user interaction. There can be a custom message, and the...

If a PowerShell script needs to perform critical steps, and user interaction must be prohibited, you can use API calls to temporarily disable all...

Encoding PowerShell code is a great way to run PowerShell code outside the PowerShell environment, i.e. in batch files. Here is some sample code...

Deleting registry keys is typically trivial and can be done with Remove-Item. However, every once in a while, you may come across registry keys that...

When you right-click a PowerShell script in File Explorer, you typically find a context menu entry called “Run with PowerShell” which...

Assume you want to hand a PowerShell script to an unexperienced user. How can you reliably get that person to correctly launch your script file?...

If you are using Publish-Module to publish your modules to a PowerShell repository, and you keep getting exceptions about unsupported commands, it...

In previous tips we illustrated how you can use PowerShell to split files into smaller file chunks, and how to join the chunks to recreate the...

In our previous tip we explained how you can split large files into smaller chunks. Today, we complete this with a function that takes these file...

PowerShell can split large files in multiple smaller parts, for example to transfer them as email attachments. Today, we focus on splitting files....

To send mails via PowerShell, you can use Send-MailMessage. However, this requires that you have access to an SMTP server, and mails sent this way...

The human mind can read sentences even if the characters are scrambled as long as the first and last letter of each word stays intact. Here is a...

PowerShell scripts can grow very slow when you (a) need to process a lot of items and (b) you are using the PowerShell pipeline. Let’s today...

Where-Object is one of the most frequently used PowerShell commands, yet it looks unfamiliar to new PowerShell users. Those who are familiar with...

When you define mandatory parameters in PowerShell, the user gets prompted for the value if it is missing. The prompt uses the parameter name only...

Not all PowerShell cmdlets ship with PowerShell. Many are part of 3rd party modules which in turn ship when you install certain software, or use...

Not all PowerShell cmdlets ship with PowerShell. Many are part of 3rd party modules which in turn ship when you install certain software, or use...

Not all PowerShell cmdlets ship with PowerShell. Many cmdlets are part of 3rd party modules which in turn ship when you install certain software, or...

In the previous tip we showed you how you can take any image or photo and turn it into a black&white ASCII art. Today, we have a revised...

With PowerShell entering the IoT world, sometimes it is necessary to deal with binary sensor data and ancient checksum models to verify data...

Occasionally it is necessary to invert the bits for a number. Most often, this is part of custom algorithms or checksum calculations. It raises the...

Numbers are stored internally as bytes. An Int32 value, for example, uses four bytes. Sometimes it is required to split up the number into its byte...

In the previous tip, we introduced a function that generates nicely centered headers and accepted a single string. Here is the function and its...

Reporting and writing log files is a common task in PowerShell. Here is a simple function to create nicely centered headers. Adjust $width to the...

Here is a simple one-liner that returns your computers’ current IP address and its full DNS name: PS>...

Slmgr.vbs is an ancient VBScript used to automate Windows license management. In the previous tip we started bypassing slmgr.vbs by reading the WMI...

Most Windows license and activation tasks can be automated using an ancient VBScript called slmgr.vbs. It does not make much sense to use this tool...

Most automated license key management tasks are done via a command called slmgr. This command is actually an ancient VBScript. To read all of your...

Let’s start this mini-series with a one-liner that extracts your Windows license key: PS> $key = (Get-WmiObject -Class...

It’s amazing how versatile PowerShell is: with just a couple of lines of code, you can turn any photo and image into a piece of ASCII art....