Microsoft Exchange Server 2016 PowerShell Cookbook - Fourth Edition

Variable expansion in strings

As mentioned in the first recipe in this chapter, PowerShell uses quoting rules to determine how variables should be handled inside a quoted string. When enclosing a simple variable inside a double-quoted string, PowerShell will expand that variable and replace the variable with the value of the string. Let's take a look at how this works by starting off with a simple example:

    [PS] C:\>$name = "Bob"
    [PS] C:\> "The user name is $name"
    The user name is Bob  

This is pretty straightforward. We stored the string value of Bob inside the $name variable. We then include the $name variable inside a double-quoted string that contains a message. When we hit return, the $name variable is expanded and we get back the message ...