Mastering Windows PowerShell Scripting - Third Edition

Naming and creating variables

Variables in PowerShell are preceded by the dollar symbol ($), for example:

$MyVariable

The name of a variable may contain numbers, letters, and underscores. For example, each of the following is a valid name:

$123 
$x 
$my_variable 
$variable 
$varIABle 
$Path_To_File 

Variables are frequently written in either camel case or upper-camel case (also known as Pascal case). PowerShell doesn't enforce any naming convention, nor does it exhibit a convention in any of the automatic variables. For example:

• $myVariable is camel case
• $MyVariable is upper-camel case, or Pascal case

One of the most commonly accepted practices is that variables used as parameters must use Pascal case. Variables used only within a script or ...