Dreaming in PowerShell

Using PowerShellPlus with PowerShell V2 (CTP3)

The great news is: PowerShellPlus works as-is with PowerShell V1 and PowerShell V2, indicating the stable and solid approach of its engine. No updates needed. From the very beginning, we took care to use only approved and backwards-compatible PowerShell...

Published Sun, Jan 04 2009 10:54 PM by Tobias Weltner

Filed under: PowerShellPlus, Cache, CTP3

Unique Lottery Numbers With Advanced Array Functionality

Recently in a workshop, we wanted to create a little PowerShell script to return nine unique random numbers. Since all participants were experienced VBScript scripters, they quickly came up with a solution. This solution grew bigger and bigger and more...

Published Mon, Dec 22 2008 6:51 PM by Tobias Weltner

Filed under: Condition, @(), -notcontains, Loop, Random, System.Random, -contains, Array

Mastering PowerShell Incompatibilities

PowerShell does aim to be downwards compatible to the classic shell cmd.exe but compatibility is poor. Today, I'd like to look at some of the issues that prevent classic console commands from running correctly within PowerShell and ways to work around...

Published Wed, Nov 26 2008 5:22 AM by Tobias Weltner

Filed under: Dir, incompatible, backtick, Set, ping, environment variable, path, cmd.exe, Alias, escape

Converting Website Data Into PowerShell Objects

Yesterday, I stumbled over an excellent blog post written in 2007 by MOW, a good friend and PowerShell expert. In it, MOW demonstrates how to scrape raw data from an HTML page and convert it to PowerShell objects ( http://thepowershellguy.com/blogs/posh...

Published Wed, Nov 26 2008 2:58 AM by Tobias Weltner

Filed under: Names, HTML, MOW, Convert

Cleaning Hard Drives and Finding Folders Total Size

Hard drives these days are huge, and still they run out of space all too soon. So maybe you'd like to find out where the storage hogs are located and which folder wastes the most space. Or, you need to manage user profiles and would like to find out...

Published Tue, Nov 25 2008 9:52 PM by Tobias Weltner

Filed under: Dir, Write-Progress, Size, Recurse, Folder, Measure-Object, System.Environment, GetFolderPath

Casting Data and Creating Validators

Casting data from one type into another type has a lot of uses. One is data validation. Let's take a look at how that works. Casting Data: What's that anyway? Whenever you store information, PowerShell automatically picks the right "container...

Published Sat, Nov 22 2008 10:30 PM by Tobias Weltner

Filed under: GetType(), -as, Validation, IPAddress, cast

Of "Types" and "Objects"

Everything in PowerShell is represented by "objects" and "types". Let's take a look what "objects" and "types" really are and why you should care. Here is a simple example. Can you guess what it is supposed...

Published Mon, Nov 17 2008 10:26 AM by Tobias Weltner

Filed under: type, GetType(), exception, object, conversion, -as, Instance

Transaction Support in PowerShell V2

PowerShell V2 is the first script environment worldwide with transaction support . A t TechEd EMEA in Barcelona, PowerShell Architect Jeffrey Snover publicly demonstrated all the new V2 features - transactions are just one of many So, what exactly are...

Published Sat, Nov 08 2008 2:40 PM by Tobias Weltner

Filed under: V2, Transaction, Undo-Transaction, Start-Transaction, Complete-Transaction, -UseTransaction, Sandbox

PowerShell V2 Remoting - a first glimpse

With PowerShell V2, you can do more with less, and remoting is among one of the most important innovations. It actually integrates tightly with other features such as jobs, security and throttling, but today, I want to focus on Remoting only and give...

Published Thu, Nov 06 2008 7:29 PM by Tobias Weltner

Filed under: WS-man, OpenWSMan, Remoting, V2, Remove-PSSession, Enter-PSSession, RPC, DMZ, New-PSSession, Get-PSSession, PSSession, DCOM, Unix

PowerShell V2 Feature Overview

In Barcelona, PowerShell architect Jeffrey Snover disclosed some details about the next PowerShell generation called V2. First of all, there will be another public pre-Beta ("CTP") available in December, allowing you to test-drive all the new...

Published Wed, Nov 05 2008 10:16 PM by Tobias Weltner

Filed under: OpenPegasus, WS-man, OpenWSMan, Windows 7, Job, Remoting, V2, R2, Script Cmdlets, Out-GridView, Inline Code, ISE, Dynamic Types, Throttling, Transaction

Identifying Object Types

In an object oriented world, commands return all kinds of different objects. To really find what you are looking for, identifying object types is crucial. Identifying .NET Objects Most often, you work with .NET objects since PowerShell is based on .NET...

Published Tue, Oct 14 2008 10:42 AM by Tobias Weltner

Filed under: COM, type, GetType, GUID, Get-ItemProperty, Registry, Split, -is, TypeName, pstypenames

Clean your Desktop with COM

My desktop gets cluttered with open explorer windows often. Whenever I need quick access to my drives, I press WIN+E , and since my hair is always on fire, these windows tend to remain open until I finally get frustrated and manually close them all. I...

Published Tue, Oct 14 2008 7:04 AM by Tobias Weltner

Filed under: Speak, SpVoice, SAPI, New-Object -COMObject, COM, Shell.Application, Explorer

Extending PowerShell with Snapins (and Microsoft OneNote)

Huh, isn't that strange? When you open a PowerShell console bundled with SQL Server or Exchange 2007, it supports a lot more cmdlets (to manage SQL Server or Exchange, for example) than regular powershell.exe does. Where do those extra Cmdlets come...

Published Fri, Oct 10 2008 2:04 PM by Tobias Weltner

Filed under: Add-PSSnapin, Get-PSSnapin, New-Item, InstalUtil, Cmdlet, Navigate, Provider, Snapin, Pscx, Register, OneNote

Trapping Errors

A lot of people are confused and ask how to correctly trap errors. Let's see how that works. Default Error Handling Whenever an error occurs, a so called "exception" is raised. If noone bothers to "handle" that exception, it finally...

Published Mon, Sep 29 2008 2:13 PM by Tobias Weltner

Filed under: Error Message, ErrorDetails, Throw, Trap, Stacktrace, Catch

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