Windows PowerShell - Billings .NET User Group - August 2009
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Windows PowerShell is a next generation command line shell and scripting language designed for managing .NET objects. It provides a consistent environment for using cmdlets to perform tasks without making simple tasks more complex. PowerShell uses a Verb-Noun syntax and processes objects instead of plain text for a powerful yet discoverable environment. It can be extended via cmdlets, providers, and host applications.
Windows PowerShell - Billings .NET User Group - August 2009
- 2. Next generation command line shellProcesses objects instead of plain textLarge set of built-in commandsConsistent command parserScripting languageDesigned for managing .NET objectsProvides a consistent environment for using cmdletsSupports complex tasks without making simple tasks more complexWhat is it?
- 3. Built on .NETUnderlying objects are .NETExtensible via cmdlets, providers, & host applicationsTargeted at IT professionalsSupported by the latest server productsAn astonishing amount can be accomplished without any programmingTechNet Script Center has hundreds of resourcesWhat is it? (cont.)
- 4. Using Windows PowerShellPrepare to be amazed
- 5. All commands use a Verb-Noun syntaxSelf-describing, discoverable environmentTab expansionCommand aliasesBrings in native applications & utilitiesObject pipelineFormattingNavigationFilteringScriptingThe Shell
- 6. Get-Command
- 7. Get-Command
- 8. Get-Command
- 9. Get-Help
- 10. Get-PSDrive
- 11. Get-Member
- 12. Command Aliases
- 14. Object pipeline
- 15. Formatting
- 16. Navigation
- 17. Navigation
- 18. Navigation
- 19. Filtering, Looping, & Selecting
- 20. Scripting
- 21. Scripting
- 22. Scripting
- 23. Scripting
- 24. Extending Windows PowerShellIf built in it is not, make it you shall
- 25. Creating CmdletsIn a class library reference System.Management.AutomationHint: It’s not in the GAC!
- 26. Creating CmdletsIn a class library reference System.Configuration.Install
- 27. Creating CmdletsAdd a class and build your cmdlet
- 28. Creating CmdletsAdd a class and build your snap-in
- 29. Creating CmdletsFrom an administrative Visual Studio command prompt navigate to your output directory and install your assemblyGotcha: On a 64-bit system you’ll need to use the 64-bit version of InstallUtil.exe
- 30. Creating CmdletsLaunch a new instance of PowerShellView the registered snap-ins:Get-PSSnapIn –RegisteredRegister the snap-in:Add-PSSnapIn
- 31. Creating CmdletsExport the current console:Export-ConsoleInclude the exported file in your projectSet it to always copy to the output directory
- 32. Creating CmdletsIn the project properties set the debug action to start powershell.exeIn the command line arguments specify your console export file using the –PSConsoleFileflag
- 33. Creating Cmdlets
- 34. Hosting PowerShellCreate a new windows forms applicationAdd a reference to System.Management.Automation and your snap-in project
- 35. Hosting PowerShellIn the form use a RunspaceConfiguration instance to add your snap-in, then create and open the runspace
- 36. Hosting PowerShellUsing the runspace create and invoke a pipelineRemember that Get-Proc is returning a collection and not individual items!
- 37. PowerShell 1.0Included in Windows Server 2008Separate download for Windows XP SP2, Windows Server 2003, & Windows VistaPowerShell 2.0Included in Windows 7 & Windows Server 2008 R2RC available for Windows XP SP3, Windows Server 2003 SP2, Vista SP1, & Windows Server 2008Where do I get it?
Editor's Notes
- #3: Shells have historically executed commands or utilities and presented results as textCmd.exe is the shell on windowsFew built-in commands, large variety of external utilities
- #8: You can filter by verb
- #9: You can filter by noun
- #14: Applications found in your path are available in PowerShellOutput from executables becomes a full-fledged object in PowerShell
- #17: Anything can be navigable using PowerShell providers!Even the registry!
- #18: SQLPS.exe, which comes with SQL Server 2008, is a custom PowerShell hostIt adds its own provider for navigating objects in SQL Server instances
- #19: The things returned by providers are itemsYou can use the –Item commands to work with them directlyIn this case when we get the subtext item we see that it is a Database type from the SMO library
- #20: Like everything else there are simple commands for filtering, looping, and sortingThose commands have simple aliasesFilter using whereSelect a new object from an existing object using selectLoop using foreach – notice that your have to ‘return’ something at the endTypical comparison operators like =, <, > aren’t used for parsing reasons
- #22: Creating a virtual machine using Hyper-V
- #23: Twitter!
- #25: It may be easier to believe now, but there is a lot you can do with PowerShell without even opening Visual Studio.