Mastering Windows PowerShell Scripting - Third Edition

The root module

The root module, a file with a psm1 extension, is given the same name as the module itself and will be nested directly under a folder that bears the module name.

When a module is installed into one of the folders in $env:PSModulePath, it may have the following structure:

Modules| -- LocalMachine     | -- LocalMachine.psm1

The module can be imported immediately by passing the path to the LocalMachine folder to Import-Module. If the module content changes, the module should either be removed using Remove-Module, or the Force parameter should be used with Import-Module.

Adding temporary module paths Environment variables modified using $env are not persistent; the change will disappear when PowerShell is closed. A temporary module ...