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Changing the default action to Edit makes it more difficult to run scripts that show up as e-mail attachments, which is one of the most likely places to find a malevolent script. However, it also makes it more difficult to execute legitimate scripts from trusted sources: You must save the attachment and then, in Windows Explorer, right-click it and choose Open. You can use this same technique (right-click and choose Open) to run any script stored on your computer, but if you want to avoid that inconvenience for a script that you know to be harmless, simply create a shortcut to the script. (Be sure the Target text in the shortcut s properties dialog box begins with wscript.exe or cscript.exe; if you include only the script name, this trick won t work.) Double-clicking the shortcut runs the script without further ado.

using using using using System; System.Collections.Generic; System.Diagnostics; System.Linq;

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One of the biggest hurdles to learning to use WSH is finding the information you need. The scripting language, whether it is VBScript or JScript, is separate from the objects you use in your scripts, and each piece has separate documentation. You must find the reference guide for both the scripting language you choose and the objects you use. Throughout this chapter, we tell you where to find the relevant documentation, most of which is available on Microsoft s Web site. The Microsoft TechNet Script Center (http://www.microsoft.com/ technet/scriptcenter/default.mspx) focuses exclusively on WSH scripting (primarily using VBScript) and has loads of sample scripts you can learn from (and use), along with tools and other useful information. You ll also find the Microsoft Windows 2000 Scripting Guide here; 549

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Microsoft Windows XP Inside Out, Second Edition although it s been around awhile, it s still one of the best resources available for learning how to use scripts to manage your computer. However, at the time of this book s publication, it doesn t have much in the way of language reference documentation. For that information, you re better off at the Windows Script section of the Microsoft Developer Network (MSDN) Library (http://msdn.microsoft.com/scripting). Browsing this site can be confusing, however. The site describes the use of the scripting languages and their associated objects, but it also provides information for software developers who want to add scripting capabilities to their programs which is another topic altogether. Tip For a wealth of third-party information about scripting and batch programming, visit Rob van der Woude s Scripting Pages Web site, at www.robvanderwoude.com. Replete with instruction, examples, and links to Microsoft and other third-party information sources, van der Woude s site covers Kix, Perl, and Rexx, as well as batch files and WSH.

RSoP is the sum of the policies applied to the user or computer, including the application of filters (security groups, WMI) and exceptions (No Override, Block Policy Inheritance). Windows Server 2003 provides three tools for generating RSoP queries: the Resul tant Set Of Policy Wizard, the Gpresult command-line tool, and the Advanced Sys tem Information Policy tool. The Resultant Set Of Policy Wizard uses existing GPO settings to report the effects of GPOs on users and computers and can simulate the effects of planned GPOs. The wizard s Logging mode reports the existing GPO settings for a user or com puter. Its Planning mode simulates the GPO settings that a user and computer might receive, and it enables you to change the simulation. The Gpresult command-line tool enables you to create and display an RSoP query on the command line. The Advanced System Information Policy tool enables you to create an RSoP query and view the results in an HTML report that appears in the Help And Support Center window.

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static class LanguageFeatures { class ProcessData { public Int32 Id { get; set; } public Int64 Memory { get; set; } public String Name { get; set; } } static void DisplayProcesses(Func<Process, Boolean> match) { var processes = new List<ProcessData>(); Implicitly typed foreach (var process in Process.GetProcesses()) local variables { if (match(process)) Object { initializers processes.Add(new ProcessData { Id=process.Id, Name=process.ProcessName, Memory=process.WorkingSet64 }); } } Console.WriteLine("Total memory: {0} MB", processes.TotalMemory()/1024/1024); var top2Memory = Extension processes methods .OrderByDescending(process => process.Memory) .Take(2) .Sum(process => process.Memory)/1024/1024; Console.WriteLine( "Memory consumed by the two most hungry processes: {0} MB", top2Memory); var results = new { TotalMemory = processes.TotalMemory()/1024/1024, Top2Memory = top2Memory, Processes = processes }; ObjectDumper.Write(results, 1); ObjectDumper.Write(processes); }

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