PowerShell: Bringing DevOps to Windows

An introduction to the foundations and possibilities of PowerShell! As presented at Abstractions.io.

1. PowerShell: Bringing DevOps to Windows! Kevin Berridge @kberridge Matrix Pointe Software
2. PowerShell
3. DevOps
4. Productivity
5. PowerShell
6. Foundation Possibilities
7. PowerShell: Bringing DevOps to Windows! Linux Mac
8. The Shell Scripting
9. The Shell
10. Basic Shell Commands and Aliases PowerShell Command PowerShell Alias DOS Equivalent Unix Equivalent Set-Location sl cd* cd* Get-ChildItem gci dir* ls* Copy-Item cpi copy* cp* Move-Item mi move* mv* Remove-Item ri del* rm* Get-Content gc type* cat* Get-Help help help* man*
21. Summary • Aliases are nice because they are short, also they match what you already know • Tab key auto completion is wonderful • The help command will teach you what you need to know
22. More Advanced Shell
23. Change .txt files to .ext files
24. ls *cmd*.txt | %{ mv $_ ($_.BaseName + ".ext" ) }
28. ls *cmd*.txt | %{ mv $_ ($_.BaseName + ".ext" ) }
30. ls *cmd*.txt | %{ mv $_ ($_.BaseName + ".ext" ) }
34. ls *cmd*.txt | %{ mv $_ ($_.BaseName + ".ext" ) }
35. Main Pipeline Commands • ForEach-Object (%) • Where-Object (?) • Sort-Object (sort) • Select-Object (select)
38. How do we run a regular command line app?
40. What dlls did msbuild build?
42. Summary • Commandlets return objects • DOS command return strings • “|” lets you easily chain commands together over those objects • Get-Member will tell you what those objects can do • %, ?, sort, select
43. Scripting
44. PSAKE
47. msbuild /v:m &”msbuild” /v:m iex ”msbuild /v:m”
53. PowerShell C# -eq == -ne != -gt > -ge >= -lt < -le <= -like Regex -notlike -match -contains Linq
54. Summary • Scripts are no different than the shell! • $variables • Use functions just like commandlets • Comparison operators • & and Invoke-Expression • $lastexitcode vs. exceptions • PSAKE: make for PowerShell
55. .NET
56. Store an encrypted string in an environment variable
57. Set-EncryptedEnvironmentVariable.ps1
59. Summary • PowerShell is a .NET language • You can use anything in .NET from PowerShell
60. Possibilities
61. Collect log records and send a nightly email
65. Automate the execution of database migrations
66. migration-connections.xml
67. deploy-migrations.ps1
68. Honorable Mentions •PowerShell Remoting SSH for Windows! •PS Read Line Better editing at the shell! •Set-PSBreakpoint Integrated debugging! •Desired State Configuration (DSC) Chef/Puppet for PowerShell!
69. PowerShell: Bringing DevOps to Windows! Kevin Berridge @kberridge Matrix Pointe Software