PowerShell – Module Installation Best Practices

I’m seeing a few errant companies have their installers throw their modules into ${env:systemroot}\WindowsPowerShell\1.0\Modules but this is not the right place. The only things that should go there are core operating system modules from Microsoft. So, where should you install them?

How to: Install a module for all users

  1. Create the folder ${env:programfiles}\YourProduct\PowerShell\Modules\
  2. Place your module (or modules) under this folder
  3. Add the folder from step 1 to the system scoped environment variable PSModulePath; consider embedding %ProgramFiles% to keep the environment string as short as possible
  4. Profit.

How to: Install a module for the current user

  1. Test for, and create if necessary the folder which is the result of this call (or equivalent in managed code): join-path ([environment]::GetFolderPath("MyDocuments")) WindowsPowerShell\Modules
  2. Copy your module or (modules) to folder at above
  3. Profit.

It’s as easy as that.

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About the author

Irish, PowerShell MVP, .NET/ASP.NET/SharePoint Developer, Budding Architect. Developer. Montrealer. Opinionated. Montreal, Quebec.

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