PowerShell has a special reserved variable named
$args. It can be used with scripts and functions and represents any arguments passed to the script or function when it is invoked, as shown here:
PS>add-content c:\temp\parameter.ps1 "`$args.count"PS>add-content c:\temp\parameter.ps1 "`$args"PS>c:\temp\parameter.ps1 1 2 331PS>
In the preceding example, a two-line script is created, and then it is invoked while passing some arguments to it.
$args.count displays the number of arguments passed to the script, which is 3;
$args displays the value of the first argument only, which is 1.
Later, an example of a PowerShell script that can do a database backup is provided. The example is extended to show ...