Variable commands

The variable commands may be used to explore and interact with variables defined in PowerShell. However, these commands are rarely used to declare variables when writing scripts or functions.

PowerShell optimizes code when it can, specifically in this section around the use of local variables. Using the *-Variable commands in a script block disables optimization, which will have an impact on the performance of a script.

The following commands are used to work with variables:

• Get-Variable
• New-Variable
• Set-Variable
• Remove-Variable
• Clear-Variable

When using the variable commands, the $ preceding the variable name is not considered part of the name; $ tells PowerShell what follows is a variable name.

Get-Variable

The Get-Variable command provides access to any variable that has been created in the current session as well as the default (automatic) variables created by PowerShell. For further information on automatic...