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Microsoft® SQL Server 2012 Unleashed by Alex T. Silverstein, Chris Gallelli, Paul T. Bertucci, Ray Rankins

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Passing Arguments

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[0]"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[0] 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 ...

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