PowerShell Best Practices and Resources

PowerShell Best Practices and ResourcesMichael BlumenthalPSC Group, LLC

Who is Michael Blumenthal?• Technical Solution Evangelist at PSC Group

• Office 365 MVP

• Dev/ITPro Mix

• In IT Consulting since 1995

• PowerShelling since 2007

• Anyone used PowerShell before?

• Who’s done scripting before? Windows? Unix?

• Developer or Administrator?

This is about you

Best Practices

Use FunctionsFunction global:Do-Something(){}

Function global:Do-Something($someParameter){}

Function global:Do-Something{param ([type]$someParameter=$(“Default

Expression”))}

Follow the Naming Convention!

Verb-Noun

• 98 Verbs

Comment your functions<#.SYNOPSIS –a brief explanation of what the script or function does..DESCRIPTION – a more detailed explanation of what the script or function does..PARAMETER name – an explanation of a specific parameter. Replace name with the parameter name. You can have one of these sections for each parameter the script or function uses..EXAMPLE – an example of how to use the script or function. You can have multiple .EXAMPLE sections if you want to provide more than one example..NOTES – any miscellaneous notes on using the script or function..LINK – a cross-reference to another help topic; you can have more than one of these. If you include a URL beginning with http:// or https://, the shell will open that URL when the Help command’s –online parameter is used.

#>

Search for Commands

Refresh the command list

Actions you can take

Self Announcing Functions

…

Source Code Control

•Always read scripts before running them

More Good Ideas

•Always read scripts before running them•Make yours safe when others don’t

More Good Ideas

•Always read scripts before running them•Make yours safe when others don’t•Check for valid parameter values • get-help about_Functions_Advanced_Parameters

More Good Ideas

•Always read scripts before running them•Make yours safe when others don’t•Check for valid parameter values • get-help about_Functions_Advanced_Parameters •Do error handling • get-help about_Try_Catch_Finally• get-help about_CommonParameters • -ErrorAction and -ErrorVariable

More Good Ideas

More Resources

JEFF HICKS

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Lounge

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Join the conversation on the Microsoft Tech CommunityTHR2078 – Master PowerShell Basics: Resources and Best Practices

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