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PowerShell cmdLet Invoke-Item

invoke-item performs the «default action» on the specified item. On most system, the following command opens foo.txt in a text editor:

invoke-item foo.txt

The following command does not necessarily run the script named xyz.ps1. It's possible it is opened in an editor:

Invoke-item .\xyz.ps1

Alias

An alias for invoke-item is ii.

invoke-item comes in handy to open a given directory in the explorer:

PS C:\users\rene> ii $env:temp

This is, imho, especially useful when I want to open the current directory in the explorer

PS C:\users\rene> ii .

For completness' sake, the same thing can be achieved in cmd.exe with the start command:

C:\users\rene> start .