Powershell, .Net, Com, Wmi etc

Basic

Significant areas of support

Access to .Net Assemblies Support for COM objects Support for WMI objects XML A Powershell console for SQL Server Powershell 2.0 Features ….and more

What is “Dot” Net

It is the framework Microsoft designed to provide a consistent approach to application development and deployment. The .net framework is built on a set of foundational libraries. It is the basis of what is known as “the stack.”

.Net

Microsoft’s software framework that is now usually installed on most of its operating systems.

CLR:Common Language Runtime

Assemblies

Compiled form of classes Includes executables (files that end in

“.exe”) or Dynamic Link Libraries (files that end in “.dll”)

Actually contains one or more files with a manifest. An assembly is a logical grouping of modules.

Full name (not file name) or Meta Data: Module name Version number (allows multiple modules of the

same name) Public key token

Usefulness of meta data

Powershell

Assemblies already loaded Using additional .Net framework Loading your own assemblies

Directly using .Net Resources

Pre-loaded assemblies [AppDomain]::CurrentDomain.GetAssemblies()

[AppDomain]::CurrentDomain.GetAssemblies() | `ForEach-Object `

{ if ($_.GlobalAssemblyCache){ $_.Location.ToString().Split("\")[4]}}

SystemSystem.DrawingSystem.XmlSystem.ConfigurationSystem.Management.Automation

Microsoft.PowerShell.Commands.UtilityMicrosoft.PowerShell.ConsoleHostMicrosoft.PowerShell.Commands.ManagementMicrosoft.PowerShell.SecuritySystem.Web.Services

Examples using Static Members

[System.Console]::Clear()[System.Math]::Log10(100)$p = `

[System.Diagnostics.Process]::Start("notepad.exe");

$p | Get-Member[System.Int32]::Parse("254");

Testing your own DLL

#You must use the fully qualified path name[Reflection.Assembly]::LoadFile("C:/PSClass/LoanSupport.dll");[Bailey.LoanSupport.LoanSupport]::currentPrimeRate();$k = new-object Bailey.LoanSupport.LoanSupport("Pat", [decimal]120000, 10)$k.Payments()

Creating an Instance$client = New-Object System.Net.WebClient$url = "http://www.cs.calvin.edu/personnel/list"$data = $client.downloadstring($url)$data.Split("`n") | `

ForEach-Object { if ($_ -match ".*@calvin\.edu" ) {($_ -replace ".*mailto:", "") -replace "`".*","" } }

WMI Support

Get-WmiObject -listget-WmiObject win32_computersystem

XML

[xml] Support of XML elements to work through

document Start with the following command:

$vXml = [xml](Get-Content bookorder.xml)

Access Com Objects

COM : Common Object Model Microsoft’s technology to support

interoperation between software regardless of original language

Examples include MS Word, Excel While .Net is slowly replacing COM,

COM is supported by Powershell

http://www.computerperformance.co.uk/powershell/powershell_com.htm

Pulling text out MS Word

$tObj = New-Object -ComObject word.application#$tObj | Get-Member#after exploring let's play#$tObj.Visible = $true$tObj.Version$file = (dir C:\PSClass\small.docx).FullName$doc = $tObj.Documents.Open($file)$text = $doc.Content.TextWrite-Host "Word document had: `n" $text$tObj.Quit()

SQL Server Support

The application sqlps.exe is provided with SQL Server 2008

It can be installed on a client and support SQL Server 2005

Check to see if it is supporting 2.0, if not you can add its functionality to your 2.0 environment.

Adding SQL Server Support

Go to this page: http://www.microsoft.com/downloads/details.aspx?FamilyID=228de03f-3b5a-428a-923f-58a033d316e1&DisplayLang=en

Download and install in the following order:SQLSysClrTypes.msiSharedManagementObjects.msiPowerShellTools.msi

In C:\Program Files\Microsoft SQL Server\100\Tools\Binn\Redist you will find SQLPS.exe.  You will also find the files the DLL's for the provider.

Enter the following commands to install the providers (cmdlet and PSDrive) and then add them C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\installutil.exe Microsoft.SqlServer.Management.PSSnapins.dll C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\installutil.exe Microsoft.SqlServer.Management.PSProvider.dllAdd-PSSnapin SqlServerProviderSnapinget-pssnapin -reg  #look for the names of the providers here.  Then use the Add-PSSnapin as belowAdd-PSSnapin SqlServerCmdletSnapin100Add-PSSnapin SqlServerProviderSnapin100

Job control in Version 2.0

Start-job : places a job in the background which is not interactive with the console

Get-job : gets information about a job.

Receive-job : Displays all the output that would have gone to the console.

fan-in / fan-out

Tutorial at

http://powershell.com/cs/blogs/tobias/archive/2009/01/17/xml-part-1-playing-with-rss-feeds-and-xml-content.aspx