PowerShell: Variable
Double Quoted String
Variable name starts with a dollar sign $
variable name are not case-sensitive.
Create Variable
$x = 3
variable can be output of a command
$x = dir
variable of a array of values
$x = 3, 4, "some"
Clear Variable
to clear, set it to $null
or use Clear-Variable
$x = $null
Clear-Variable $x
Delete Variable
Remove-Item -Path Variable:\varName
Variable with Special Character
variable name can contain space or unicode.
use {}
to quote them, like this:
${long var name with space}
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