PowerShell: Variable

Variable name starts with a dollar sign $

Variable names are case-insensitive.

Variable name can contain space or unicode. Use {} to quote them, like this: ${odd var name}

Create Variable

$x = 3

Variable can store output of a command

$x = dir

Clear Variable

Set it to $null or use Clear-Variable

$x = $null

Clear-Variable $x

clv is alias of Clear-Variable.

Delete Variable

Remove-Item -Path Variable:\varName

rm -Path variable:\x

rm is alias of Remove-Item.

List Variables

dir variable:

here's part of the output: