The Get-Credential cmdlet creates a credential object for a specified user name and password. You can use the credential object in security operations. Beginning in Windows PowerShell 3.0, you can use the Message parameter to specify a customized message on the dialog box that prompts the user for their name and password. The Get-Credential cmdlet … More Get-Credential

All scripting languages use placeholders or variables to hold data. Each language has its own rules and symbols. I have found that PowerShell variables are straightforward, just remember to introduce your variable with a dollar sign, for example: $Memory PowerShell has no built-in mechanism for enforcing variable types, for example, string variables can begin with … More Windows PowerShell Variables