July 2011 - Richard Siddaway's Blog - PowerShell.com – PowerShell Scripts, Tips, Forums, and Resources

European PowerShell Deep Dive

In April there was a Powershell Deep Dive at The Experts conference. It went so well that the event is to be repeated at the European version of The Experts Conference - October 17-18 Available details are limited but start here http://blogs.msdn.com...

Published Wed, Jul 13 2011 5:56 AM by Richard Siddaway's Blog

Filed under: Deep Dive, Powershell

Windows SysInternals Administrators Reference

Windows SysInternals Administrators Reference Title: Windows SysInternals Administrators Reference Publisher: Microsoft Press ISBN: 978-0-7356-5672-7 The SysInternals tool set – http://technet.microsoft.com/en-us/sysinternals/default.aspx –...

Published Wed, Jul 13 2011 3:50 AM by Richard Siddaway's Blog

Filed under: Technology, Books, Windows 7, Windows Server 2008 R2, Windows Server 2008

Standard Deviation

Another simple calculation in PowerShell function get-standarddeviation { [ CmdletBinding ( ) ] param ( [double[]] $numbers ) $avg = $numbers | Measure-Object -Average | select Count , Average $popdev = 0 foreach ( $number in $numbers ) { $popdev += Read...

Published Tue, Jul 12 2011 4:03 PM by Richard Siddaway's Blog

Filed under: PowerShell Basics, Math

Mean and moody

Been looking at some simple statistical calculations. First off calculating the mean (arithmetic mean aka average in layman’s speak) For this we can use Measure-Object function get-mean { [ CmdletBinding ( ) ] param ( [double[]] $numbers...

Published Tue, Jul 12 2011 3:47 PM by Richard Siddaway's Blog

Filed under: PowerShell Basics, Math

Working with strings: bits and pieces

In the previous post I showed how to generate the parent OUs by splitting and rejoining a string. I used the operators –split and –join These were introduced in PowerShell v2. In PowerShell v1 we had to use the split() method and stitch the thing...

Published Tue, Jul 12 2011 2:19 PM by Richard Siddaway's Blog

Filed under: PowerShell V2, Strings

Listing parent OUs

Problem: You have an OU distinguished name and you need to list the parents Solution: function get-parent { param ( [string] $ou ) $dom = [System.DirectoryServices.ActiveDirectory.Domain] :: GetCurrentDomain ( ) $root = $dom . GetDirectoryEntry ( ) $search...

Published Mon, Jul 11 2011 2:30 PM by Richard Siddaway's Blog

Filed under: PowerShell and Active Directory

Working with strings: I’m a substitute

PowerShell string substitution is a very neat trick PS (1) > $string = "World" PS (2) > "Hello $string" Hello World We can substitute the value of the variable into the string. The catch – it only works with double quoted...

Published Sun, Jul 10 2011 9:38 AM by Richard Siddaway's Blog

Filed under: PowerShell V2, Strings

Moving AD objects

Continuing our occasional look at using PowerShell to administer AD we need to move objects. We can keep this nice and generic function move-object { param ( [string] $object , [string] $source , [string] $target ) $domain = ( [adsi] "" ) ....

Published Sun, Jul 10 2011 7:16 AM by Richard Siddaway's Blog

Filed under: PowerShell and Active Directory

Working with strings: likes and dislikes

Lets start with a string $str = "abcdefghi" We often only have part of a string to work with so we end up using –like $str -like "abc*" $str -like "*abc*" $str -like "*def*" $str -like "*ghi" these...

Published Sun, Jul 10 2011 4:53 AM by Richard Siddaway's Blog

Filed under: PowerShell V2, Strings

Linking the network card to the Registry settings

An interesting problem from the forum. Get the IP enabled network adapters and read the associated registry keys to get the value of the NetLuidIndex. $HKLM = 2147483650 $reg = [wmiclass] '\\.\root\default:StdRegprov' $keyroot = "SYSTEM\CurrentControlSet...

Published Sat, Jul 09 2011 7:46 AM by Richard Siddaway's Blog

Filed under: PowerShell and WMI, Networking

Working with Strings: Simple comparisons

Lets start with simple string matching as its a task that frequently comes along "aaa" -eq "aaa" "aaa" -ceq "aaa" both return true. What’s –ceq you ask? PowerShell by design is case insensitive so for...

Published Sat, Jul 09 2011 4:25 AM by Richard Siddaway's Blog

Filed under: Strings

AN easier clock

In this post http://msmvps.com/blogs/richardsiddaway/archive/2011/07/07/a-powershell-clock.aspx I showed how to use xaml and WPF to create a PowerShell clock. PowerShell MVP Doug Finke has taken that and converted it to using the ShowGUI module http:...

Published Fri, Jul 08 2011 12:33 PM by Richard Siddaway's Blog

Filed under: PowerShell V2

Next partition

I also need to generate a partition number for Mount-VHD Similar idea but use the Win32_DiskPartition class function get-nextpartition { $disk = Get-WmiObject -Class Win32_DiskPartition | sort Index -Descending | select -First 1 -Property Index $nextindex...

Published Thu, Jul 07 2011 3:21 PM by Richard Siddaway's Blog

Filed under: PowerShell and WMI

Next drive letter

I’ve been working on using the Hyper-V PowerShell library and wanted to use the Mount-VHD function. It wants a drive letter. The library provides Get-FirstAvailableDriveLetter but what I want is actually the next letter in the sequence. ...

Published Thu, Jul 07 2011 3:19 PM by Richard Siddaway's Blog

Filed under: PowerShell and WMI

July User group meeting details–PowerShell Remoting

When: Tuesday, Jul 26, 2011 7:30 PM (BST) Where: *~*~*~*~*~*~*~*~*~* A look at PowerShell Remoting using individual commands, Invoke-Command and PowerShell sessions. How to configure remoting and get the best out of it Notes Richard Siddaway has invited...

Published Thu, Jul 07 2011 3:11 PM by Richard Siddaway's Blog

Filed under: PowerShell User Group, Remoting

July 2011 - Richard Siddaway's Blog

Recent Posts

Archives

Tags

European PowerShell Deep Dive

Windows SysInternals Administrators Reference

Standard Deviation

Mean and moody

Working with strings: bits and pieces

Listing parent OUs

Working with strings: I’m a substitute

Moving AD objects

Working with strings: likes and dislikes

Linking the network card to the Registry settings

Working with Strings: Simple comparisons

AN easier clock

Next partition

Next drive letter

July User group meeting details–PowerShell Remoting