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Beside this, what does _ mean in PowerShell?

$_ represents the current object on the pipeline – if you want to know why $_ was chosen you'll have to read PowerShell in Action! To recap $_ (or $psitem) is used to represent the current object on the pipeline. You can us it in commands that are performing an action on every object on the pipeline.

Secondly, what does @{} mean in PowerShell? In PowerShell, placing a dollar sign in front of a word (or a series of characters) denotes that the word is a variable. If for example, I wanted to assign my name to a variable, I might use a command like this: $Name = 'Brien' Similarly, PowerShell allows you to map an entire command string to a variable.

Thereof, what does in PowerShell mean?

Definition of PowerShell PowerShell is the shell framework developed by Microsoft for administration tasks such as configuration management and automation of repetitive jobs. The term 'PowerShell' refers to both – the shell used to execute commands and the scripting language that goes along with the framework.

What is PassThru in PowerShell?

The PassThru parameter lets you request output from cmdlets that return no output by default. It's used most often to verify that the cmdlet did what you intended. Source. Example: Get-Command -Name "*-Command" | Out-GridView -PassThru.