Variables in PowerShell

Variables

Define a variable

$var_name
Set-Variable -Name "myVar" -value "value of variable"
New-Variable -Name "myVar" -value "value of variable"
${ complex variable name} = "value"

Here-String

$str = @"
The character " is treated as a character and this string.
Variable will get expanded.
"@
$str = @'
Variable in this string will not get expanded.
'@

Constant

Set-Variable test -option Constant -value 100
Set-Variable test -option ReadOnly -value 100

Scope

$local_variable
$global:Global_Variable

Check type

$var -is [int]
$var -is [String]

Clear a variable

Clear-variable $myVar

Remove a variable

Remove-variable $myVar