PowerShell: Bringing DevOps to Windows

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

Transcript

1. PowerShell: Bringing
   DevOps to Windows!
   Kevin Berridge @kberridge
   Matrix Pointe Software
   

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2. PowerShell
   

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3. DevOps
   

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4. Productivity
   

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5. PowerShell
   

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6. Foundation
   Possibilities
   

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7. PowerShell: Bringing
   DevOps to Windows!
   Linux
   Mac
   

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8. The Shell
   Scripting
   

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9. The Shell
   

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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*
    

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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
    

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22. More Advanced Shell
    

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23. Change .txt files to .ext files
    

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24. ls *cmd*.txt | %{ mv $_ ($_.BaseName + ".ext" ) }
    

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28. ls *cmd*.txt | %{ mv $_ ($_.BaseName + ".ext" ) }
    

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30. ls *cmd*.txt | %{ mv $_ ($_.BaseName + ".ext" ) }
    

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34. ls *cmd*.txt | %{ mv $_ ($_.BaseName + ".ext" ) }
    

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35. Main Pipeline Commands
    • ForEach-Object (%)
    • Where-Object (?)
    • Sort-Object (sort)
    • Select-Object (select)
    

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38. How do we run a regular command line app?
    

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40. What dlls did msbuild build?
    

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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
    

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43. Scripting
    

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44. PSAKE
    

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47. msbuild /v:m
    &”msbuild” /v:m
    iex ”msbuild /v:m”
    

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53. PowerShell C#
    -eq ==
    -ne !=
    -gt >
    -ge >=
    -lt <
    -le <=
    -like Regex
    -notlike
    -match
    -contains Linq
    

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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
    

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55. .NET
    

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56. Store an encrypted string in
    an environment variable
    

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57. Set-EncryptedEnvironmentVariable.ps1
    

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59. Summary
    • PowerShell is a .NET language
    • You can use anything in .NET from PowerShell
    

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60. Possibilities
    

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61. Collect log records
    and send a nightly email
    

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65. Automate the execution of
    database migrations
    

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66. migration-connections.xml
    

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67. deploy-migrations.ps1
    

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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!
    

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69. PowerShell: Bringing
    DevOps to Windows!
    Kevin Berridge @kberridge
    Matrix Pointe Software
    

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