Introduction to PowerShell
10/29/07
© 2007 Asynchrony Solutions, Inc.
Introduction to PowerShell
Brian Button
VP Engineering
Asynchrony Solutions, Inc brian.button@asolutions.com
http://oneagilecoder.asolutions.com
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Visual Studio 2005
VS.Net SP1
IIS
TFS Explorer
SQL Server 2005
GAX
GAT
Just the other day…
Enterprise Library
Nunit
Xunit.net
Resharper
Test Driven.net
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Failure!!!
• SQL Server failed to install and uninstall
• What to do???
• MSDN says:
• Regedit HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall
• For each GUID found, Examine DisplayName searching for match of ‘SQL
Server’
• Manually uninstall it
• Maybe there was a better way!
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What is PowerShell
• New Scripting language
• Same, but different!
• In Vista, then unbundled
• Separate download
• General purpose programming language
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• Shell prompt
• Cmdlets
• Pipes
• .Net objects
• PSDrives
• Help system
Basic Tour
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• Get-Help
• Get-Command
• Get-Member
• Get-Psdrive
• Format-List
5 key commands
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Let’s build something
• Removing all bin and obj folders from project
• Find all IDisposable classes in assembly
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Powershell as a programming language
• General purpose programming language
• File extension PS1
• Example: Reformat.PS1
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Extending Powershell
• Custom Cmdlets and PSSnapins
• Written in C# or VB.Net
• Functions, Filters, Aliases
• Written in powershell
• Adding methods, properties to existing types
• Written in XML, powershell
• Add-member
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Extending Powershell in C#/VB.Net
• Create Custom cmdlet
[Cmdlet(VerbsCommon.Get, "Proc")]
}
{ public class GetProcCommand : Cmdlet
• Create PSSnapin to install
• Great tutorial at http://blogs.msdn.com/daiken/archive/2007/02/07/creating-a-windowspowershell-cmdlet-using-the-visual-studio-windows-powershelltemplates.aspx
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Extending Powershell natively
• Functions function to_uppercase
{ param([string]$first)
$first.ToUpper()
}
• At command line or in user profile
© 2007 Asynchrony Solutions, Inc.
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Extending Powershell natively
• Aliases – make commands easier to use
• set-alias, new-alias, get-alias
Alias gal Get-Alias
Alias gc Get-Content
Alias gci Get-ChildItem
Alias gcm Get-Command
Alias gdr Get-PSDrive
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Customizing Powershell
• User profile
• $profile
• Get-Executionpolicy
• Like .profile or .login in Linux
• Invoked for every new shell
• Sets up functions, aliases, etc
© 2007 Asynchrony Solutions, Inc.
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Why learn Powershell
• Automate repetitive tasks
• Share knowledge with others
• It’s the Microsoft Way…
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Controlling Windows through Scripts
• Complaints for years about GUI-only config
• In Unix/Linux forever
• MS making admin tasks powershell-scriptable
• Exchange
• SQL Server
• IIS 7
• More
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Resources
• Download powershell through Microsoft.com
• Videos
• http://channel9.msdn.com/Media/?TagID=163
• Blogs
• http://blogs.msdn.com/powershell
• http://thepowershellguy.com
• http://keithhill.spaces.live.com
• http://www.leeholmes.com/blog
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More resources
• Books
• Powershell in Action, Bruce Payette
• Professional Windows Powershell, Andrew Watt
• Windows Powershell Cookbook, Lee Holmes
• Community projects
• 21 projects on http://www.codeplex.com
© 2007 Asynchrony Solutions, Inc.
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Q & A
• Slides posted at http://oneagilecoder.asolutions.com
• Email questions to brian.button@asolutions.com
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