Instant Windows PowerShell Guide

Setting default parameter values (Intermediate)

We will learn to set the default parameter values.

Getting ready

$PSDefaultParameterValues is a default preference variable introduced in PowerShell v3.0. This variable sets the custom parameter values to specified CMDLETs and functions. It maintains a hash table to store all of the defined values.

How to do it...

Try the following test code to set the default parameter values:

1. The following command statement sets the localhost value to the parameter name ComputerName for all CMDLETs that have Invoke as a verb:

   PS C :\> $PSDefaultParameterValues=@{"Invoke-*:ComputerName"="localhost"} 
   

   Tip

   $PSDefaultParameterValues accepts wildcard characters. Also, we can use the ; (semicolon) character to assign multiple ...