This is a presentation for my "Introduction to PowerShell" workshop

1. Introduction to PowerShell Ivan Suhinin Senior Software Engineer

2. What is PowerShell? Automation engine Shell environment Scripting language

3. PowerShell as a shell A full replacement for CMD At last something bash-like in Windows Just… feel the power!

4. PowerShell as a language Variables: $a, $name Arrays: $arr = 1,2,3,4,5,6; $sarr=1..6 Hashes: $h = @{“Key1" = 23; “Key2" = 894} Functions: function hi ($name) { echo "Hi, $name!" } Classes:($o = New-Object Object) |Add-Member NoteProperty Name “Bianco"

5. PowerShell as an automation tool Predefined set of commands with lots of extensions Easy batch operations Simple command interconnections (pipelining)

6. Command types Cmdlets – Get-Location Functions User scripts - *.ps1 Native applications (msbuild, csc)

7. Cmdlets Predefined set of commands Form: Verb-Noun: Get-Location Get-ChildItem Set-Location Long, descriptive names for scripts Aliases for daily usage

8. Aliases Creating short names for long cmdlets Get-Alias, Set-Alias Makes scripting more friendly By default has standard UNIX aliases ls, ps, pwd, date, kill, gal, pushd, popd

9. Wiring commands up Pipelining: Get-Location | Get-Member Functional style .NET objects instead of strings (bash) Output becomes input Select – selecting only needed information Where – filtering results Group – grouping results ForEach – processing each input value

10. PowerShell providers Adapters to different subsystems Get-PSProvider, Get-PSDrive Default: WSMan, Alias, Environment, FileSystem, Registry Extended: IIS, SQL, SharePoint, VMWare

11. Using external components Windows Management Instrumentation (WMI) gwmi win32_service gwmi win32_operatingsystem COM (New-Object -ComObjectWScript.Shell).Run("calc.exe")

12. Using .NET Importing assemblies:[Reflection.Assembly]::LoadWithPartialName("System.Messaging") Calling static methods:[System.Messaging.MessageQueue]::GetPrivateQueuesByMachine("localhost") Creating and using objects:$b = New-Object System.Text.StringBuilder$b.Append("Hello!")

13. man Ultimate help system Examples Detailed Full

14. Demo: deleting MSMQ queues

15. Demo: sorting SQL tables by size

16. Demo: real-life deployment script

17. Development environment Autocompletion Tab key Wildcards Works for methods PowerShell ISE PowerGUI

18. Q & A