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Microsoft Windows Script Host (WSH) provides a way to perform more sophisticated tasks than the simple jobs that batch programs are able to handle. You can control virtually any component of Microsoft Windows and of many Windows-based programs with Windows Script Host scripts. To run a script, you can type a script name at a command prompt or simply double-click the script s icon in Windows Explorer. Windows Script Host has two nearly equivalent programs Wscript.exe and Cscript.exe that, with the help of a language interpreter dynamic-link library such as Vbscript.dll, execute scripts written in VBScript or other scripting languages. With WSH, the files can be written in several different languages, including VBScript (a scripting language similar to Microsoft Visual Basic) and JScript (a form of JavaScript). Windows Script Host is, in fact, just what its name says: a host for script languages. VBScript and JScript interpreters come with Windows XP; interpreters for Perl, KiXtart (Kix), Python, Rexx, and other languages are available elsewhere. Because WSH scripts can access ActiveX controls, they provide great flexibility. Several objects are provided with Windows Script Host that allow you basic control of Windows and your computer. By using ActiveX, you can control many of the programs on your computer. For example, you can create a WSH script to display a chart in Microsoft Excel. As an introduction, here s the WSH Hello World script. It s as short as it can get in any programming language:

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Syntactic sugar is a term coined by Peter J. Landin for additions to the syntax of a computer language that do not affect its expressiveness but make it sweeter for humans to use. Syntactic sugar gives the programmer an alternative way of coding that is more practical, either by being more succinct or more like some familiar notation.

WScript.Echo "Hello World"

To delegate control of RSoP, complete the following steps: 1.

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In the console tree, right-click the domain or OU for which you want to delegate control of RSoP, and then click Delegate Control. 3. On the Welcome To The Delegation Of Control Wizard page, click Next. 4. On the Users Or Groups page, click Add. 5.

This comments out the Echo Off command so that each line echoes to the screen with parameters and environment variables filled in before it is executed. In our sample file, you would probably also want to temporarily remove the redirection to Nul from each command so that you could see all the output.

In the Select Users, Computers, Or Groups dialog box, type the user or group for which you want to delegate administration in the Enter The Object Names To Select box, and then click OK. Click Next on the Users Or Groups page. 6.

include database queries right into your C# code, LINQ provides the same type of expressive capabilities that SQL offers, but in the programming language of your choice. This is great because a declarative approach like the one LINQ offers allows you to write code that is shorter and to the point. Listing 1.1 shows sample C# code you can write with LINQ.

Microsoft Windows XP Inside Out, Second Edition Using a plain-text editor such as Notepad, put this line in a file with a .vbs file name extension (Hello.vbs, for example), and you have a working WSH script. Simply double-click the file s icon in Windows Explorer to run your script.

On the Tasks To Delegate page, click Delegate The Following Common Tasks and select the Generate Resultant Set Of Policy (Logging) check box or the Generate Resultant Set Of Policy (Planning) check box, or both, and then click Next. 7.

This chapter describes two rather different methods for automating repetitive tasks: batch programs and scripts. The method you should use depends in part on your comfort level. For tasks that can be performed by either method, choose the one that s easiest for you. Batch programs are generally easier to write and debug, particularly if you re already familiar with the batch command language used in MS-DOS and earlier versions of Windows. You ll find, however, that many tasks can t be performed by batch programs. And even those that can are often done better with a script, which provides better program logic, user feedback, and error handling. To give you an idea of how batch programs and scripts compare for a simple procedure, examine the examples below and on the next page. As you can see, it s sometimes possible to use nearly identical program logic in both languages. These programs examine the registry to see whether hidden files (those with the hidden attribute set) are displayed in Windows Explorer. If not, the programs modify the registry so that hidden files, super-hidden files (those with the system and hidden attributes set), and all file name extensions are displayed. If hidden files are already displayed, the programs modify the registry so that these items are not displayed. Of course, you can make these display changes with a trip to the Folder Options dialog box instead of modifying the registry directly. But that s rather tedious, and you may want to switch between these settings frequently the perfect application for a batch program or a script. Here s the batch program, called ToggleHiddenExplorerStuff.bat:

In this exercise, you create an RSoP query with the Resultant Set Of Policy Wizard Log ging mode and view the results in the RSoP query console.