PowerShell: Automation for Everyone

1. PowerShell: Automation for Everyone • ComCampAuckland • Gavin Barron, Solution ArchitectMarch 22, 2014

2. Our agenda Intro The only five commands you need Demos Rules for writing scripts Wrap up

3. Your presenter Gavin Barron Solution Architect • SharePoint Server MVP • Developer • Skier • http://gavinb.net • @gavinbarron • gavin.barron@intergen.co.nz

4. Why Automate? Repeatability Reliability Save time? Eliminate boring manual tasks

5. Why PowerShell? Product specific cmdlets Able to run .NET code Hooks into WMI/COM Object pipeline Readable scripts

6. The only five commands you need

7. Get-Command

8. Get-Help

9. Get-Member

10. Where-Object

11. ForEach-Object

12. Demos

13. Find the command you need

14. Simple Pipeline Use

15. File renaming in .bat @echo off for /f "delims=" %%a in ('dir /b *.txt') do call :dot "%%a" pause goto :EOF :dot set "var=%~n1" set "var=%var:.=_%"   echo ren %1 "%var%%~x1"

16. Rules for writing scripts

17. Consider error cases What should you do when it goes pear shaped? Default behaviour is Ignore and Continue $ErrorActionPreference -ErrorAction try{} catch{}

18. Consider your outputs Write-Host Write-Output Write-Progress Add-Content Out-File

19. Have style! • Use a coding convention • Naming • Casing • Bracing • Avoid aliases • Be Consistent!

20. Leverage functions for re-use Small tasks Compose a script from functions Functions are highly reusable CmdletBinding Attribute Parameters Attribute Default Values

21. Use configuration files $file =[xml] (Get-ChildItem $constantsFilePath) $root = "setup-config" $ConstantsNodeList = $file.$root.Constants foreach($property in $ConstantsNodeList.Property) { $key= $property.Key $value=$property.Value $webApp.Properties.Add($key,$value) } $webApp.Update()

22. Script Examples

23. Wrap up

24. Start scripting, it’s easy!

25. Handy resources http://blogs.technet.com/b/heyscriptingguy http://gallery.technet.microsoft.com/scriptcenter http://social.technet.microsoft.com/Forums/scriptcenter/en-US/home?forum=ITCG http://ss64.com/ps/ http://ss64.com/ps/syntax.html

26. Any questions?

27. Thank you • Email: gavin.barron@intergen.co.nz • Blog: http://gavinb.net • Twitter: @gavinbarron

28. THE END