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Jaykul / ToDictionary.ps1
Created Oct 21, 2019
More LINQ Helpers for PowerShell
View ToDictionary.ps1
# Add a .ToDictionary(KeyType,ValueType) for all hashtables
Update-TypeData -TypeName Hashtable -MemberType ScriptMethod -MemberName ToDictionary -Value {
[Func[DictionaryEntry,$($KeyType.FullName)]]{ `$args.Key },
[Func[DictionaryEntry,$($ValueType.FullName)]]{ `$args.Value })"
Jaykul / SubscriptionNameCompleterAttribute.ps1
Last active Nov 8, 2019
Bonus Argument Completers For Azure
View SubscriptionNameCompleterAttribute.ps1
using namespace Microsoft.Azure.Commands.Common.Authentication.Abstractions
using namespace System.Management.Automation.Language
using namespace System.Management.Automation
using namespace System.Collections.Generic
using namespace System.Collections
class SubscriptionNameCompleter : ArgumentCompleterAttribute {
# PowerShell expects you to write IArgumentCompleter and register them with this syntax:
# [ArgumentCompleter([MyIArgumentCompleter])]
Jaykul / Measure-SubstringCount.ps1
Last active Sep 26, 2019
Using that RegularExpression MatchEvaluator in PowerShell
View Measure-SubstringCount.ps1
function Measure-SubStringCount {
Counts occurrences of a regex pattern in the input, shows them with -Verbose
Written as an example of how the Regex MatchEvalutor can be (ab)used for good.
Jaykul / About
Last active Sep 23, 2019
I wrote all of this just to get Split-WTTab
View About

I've been using Windows Terminal since the source code was released, and now that we have support for split panes, I wanted a way to easily create a tab with three panes (one for each version of PowerShell I want to test against).

Unfortunately, there's no support for opening tabs from the command-line yet, nor is there any support yet for specifying which profile to use in a new split terminal. There are open issues for those features, but although I've done a PR or two for it, I didn't think it would be an easy thing to pull together, but I knew that new tabs use the default profile.

Switching the default profile and then creating a new split with the hotkeys works great,

Jaykul / InformationView.ps1xml
Created Sep 17, 2019
Formatting InformationRecord does not work
View InformationView.ps1xml
<?xml version="1.0" encoding="utf-8" ?>
<OutOfBand />
Jaykul / About My
Last active Sep 4, 2019
The crazy things we do with PSModulePath ...
View About My

As a general rule, most people can just edit the PSModulePath variable in their Environment Variables ...

However, I am not most people.

I want to test all the things, and I want to use PowerShell 7, 6, and 5 interchangeably:

  • I have to use PowerShell 5 for most of our work code (we're provisioning Windows 10, and 5 is what's on the box)
  • I want to test PowerShell 7 (or whatever the current pre-release is)
  • I want to use the current "release" version (PowerShell 6.2, right now) as my daily driver

I don't want to install three or more versions of the Azure modules and keep them all up to date. One copy works interchangeably in all versions of PowerShell. It would be crazy to install that same version three times (once for each version of PowerShell), but that's what Microsoft seems to want me to do.

Jaykul / ShouldHaveAParameter.ps1
Last active Aug 30, 2019
A better Parameter assertion for Pester Should
View ShouldHaveAParameter.ps1
function Assert-HasAParameter {
Asserts that a command has the expected parameter (and supports aliases)
Get-Command "Invoke-WebRequest" | Assert-HasAParameter Uri -Mandatory
Get-Command "Invoke-WebRequest" | Should -HaveAMandatoryParameter Uri
Jaykul / Test-OutboundIP.ps1
Created Aug 9, 2019
A test for our environments, to make sure NAT worked
View Test-OutboundIP.ps1
Describe "Outbound traffic from App Servers should be load balanced" {
$Servers = Invoke-Command -Cn ($Env:COMPUTERNAME -replace "MGT", "DC") {
Get-ADComputer -Filter * | Where-Object Name -notmatch "SQL|DB|ETL|Cluster|DC" | Select-Object -ExpandProperty Name
It "Appears all traffic comes from a single IP Address" {
$IPs = Invoke-Command -EnableNetworkAccess -Cn $Servers { Invoke-RestMethod }
$Servers.Count | Should -BeGreaterThan 4
$Ips.Count | Should -Be $Servers.Count
Jaykul / FileEditor.Gui.ps1
Created Aug 9, 2019
The problem with gui.cs is once you create something, you can't create another. I.e. you can't run this script twice.
View FileEditor.Gui.ps1
using namespace Terminal.Gui # maybe it isn't installed yet, but who cares?
if (!(Test-Path Libraries)) {
mkdir Libraries -Confirm
if (!(Test-Path .\Libraries\Terminal.Gui.0.24.0\lib\netcoreapp2.0\Terminal.Gui.dll)) {
Install-Package Terminal.Gui -Destination .\Libraries\
add-type -path .\Libraries\NStack.Core.0.11.0\lib\netstandard1.5\NStack.dll
add-type -path .\Libraries\Terminal.Gui.0.24.0\lib\netcoreapp2.0\Terminal.Gui.dll
Jaykul / Connect-RemoteDesktop.ps1
Created Aug 6, 2019
Using WASP to remote desktop, for those ocassions when policy blocks you ...
View Connect-RemoteDesktop.ps1
#requires -Modules WASP
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