Aaron Rothstein

PowerShell Splatting: What is it, Why Use It

Aaron Rothstein · Oct 17, 2017 · 4 Comments

Make your PowerShell scripts easier to read with splatting.

No one likes horizontal scrolling

The format of PowerShell cmdlets make them universally easy to use. Enter the cmdlet name, then enter the various parameter switches and values for those parameters. For a lot of commands, everything can fit cleanly on one line and within either the standard 80 character width of a standard prompt or the full screen width of your favorite editor.

However, there are going to be times you want to specify a LOT of parameters, and some of those parameter values may be lengthy in nature. The last thing you want to do though is have to start scrolling sideways or trying to wrap your “one-liner” to read it.

Configuring Windows DHCP, Part 3: Creating DHCP Reservations

Aaron Rothstein · Aug 22, 2017 · Leave a Comment

Need to mix the convenience of DHCP with the consistency of a static IP? Use a DHCP reservation, and create them with PowerShell.

DHCP reservations explained

DHCP empowers us to automatically assign IP addresses to clients while adhering to standardized rules (address space, lease duration, DNS servers, etc). For most clients, we typically don’t care what IP address the client ends up with on any given day, but for other devices consistently connected to the network, there are benefits to having the device get the same IP every time. A prime example that everyone can relate to is a printer. If you have the printer shared through a print server, the print server needs to be able to consistently talk to the printer on a known IP address.

“A DHCP reservation is a permanent IP address assignment. It is a specific IP address within a DHCP scope that is permanently reserved for leased use to a specific DHCP client” (tech-faq.com).

In the previous post we created DHCP scopes. Let’s see how we can use PowerShell to create a DHCP reservation within one of those scopes.

Configuring Windows DHCP, Part 2: Creating DHCP Scopes

Aaron Rothstein · Aug 21, 2017 · Leave a Comment

Use PowerShell to create dynamically assigned ranges of IP addresses using DHCP scopes.

What is a DHCP scope?

Per TechNet, a DHCP scope “is the consecutive range of possible IP addresses that the DHCP server can lease to clients on a subnet. Scopes typically define a single physical subnet on your network to which DHCP services are offered. Scopes are the primary way for the DHCP server to manage distribution and assignment of IP addresses and any related configuration parameters to DHCP clients on the network.”

Let’s say you have three subnets on your local network, 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24. The first subnet, 192.168.1.0/24, is a server and network management subnet where all IPs are statically assigned. For this subnet, you would not need to configure a DHCP scope.

For the other subnets, 192.168.2.0/24 is for your wired clients and 192.168.3.0/24 is for your wireless clients. These clients will connect and disconnect to the network throughout the day and week. For these subnets, you would configure a DHCP scope to handle the automatic assignment of IP address leases to these clients.

Configuring Windows DHCP, Part 1: Installing the DHCP Server Role

Aaron Rothstein · Aug 14, 2017 · Leave a Comment

Use PowerShell to configure a Windows DHCP server, starting with the installation of the DHCP Server role.

Windows DHCP Server and PowerShell

If you are running an Active Directory network with Active Directory integrated DNS, you are likely also running Windows DHCP server for managing the automatic assignment of IP addresses to network clients. This post is the first in a series of how to install and configure a Windows DHCP Server using PowerShell, which will allow you to author a build script ahead of implementation, as well as handle some transitional activities from a previous Windows DHCP server.

A DHCP Server is a good candidate for using Desired State Configuration, and there is a DSC resource for managing a DHCP server, which we will cover at the tail end of this post series. But first we will demonstrate the usage of the various DHCP server related cmdlets. [Read more…] about Configuring Windows DHCP, Part 1: Installing the DHCP Server Role

Create Cortana Audio Files From Text Using PowerShell

Aaron Rothstein · Jul 17, 2017 · Leave a Comment

Use Windows 10’s Text-to-Speech capability and Cortana’s voice to create WAV audio from within a PowerShell script.

Finding a Universal Voice: A Universal Problem

Have you ever called a support line and had to listen to a bunch of different recorded scripts, also known as “prompts”? The prompts may be the voice of a single person or a combination of different people (maybe the original voice left the company). There may be feedback noise on the recording. The speaker may have tripped over a word but decided not to record the prompt over again. Maybe the speaker had a cold one the day of recording. All of these factors can create an inconsistent user experience when interacting with the call prompts. If that weren’t enough, it takes TIME to record prompts manually! The more you have the longer it will take, even if you get every recording right on the first try.

Wouldn’t it be great if there was a way to audio files with a consistent voice, and in an efficient manner? We can, with PowerShell and Windows 10’s Text-to-Speech capability, powered by the .NET class SpeechSynthesizer.