Set-ItemProperty -Path $scriptRoot -Name $key -Value $value | `Īdd-RegistryValue -key forscripting -value test Working with trace level 1 New-ItemProperty -Path $scriptRoot -Name $key -Value $value ` New-Item -Path HKCU:\Software\ForScripting | Out-Null $scriptRoot = "HKCU:\software\ForScripting" The complete CreateRegistryKey.ps1 script is shown here: The Add-RegistryValue function is called when the script executes. If the registry key does not exist, the registry key is created and a property value is set. If the registry key exists, a property value is set. In the Add-RegistryValue function, the Test-Path cmdlet is used to determine if the registry key exists. It contains a single function called Add-RegistryValue. To understand the process of tracing a script and the differences between the trace levels, examine the CreateRegistryKey.ps1 script. Displays variable assignments, function calls, and external scripts. Lines in the script that are not executed are not traced.
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Traces each line of the script as it is executed. Does not display variable assignments, function calls, or external scripts. To enable script tracing, you use the Set-PSDebug cmdlet and specify one of three levels for the -trace parameter:
Script debugger error getting property code#
By watching the commands as they are displayed, you can determine if a line of code in your script executes or if it is being skipped.
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Script debugger error getting property windows#
When you turn on script-level tracing, each command that is executed is displayed in the Windows PowerShell console. One of the simplest ways to debug a script is to turn on script-level tracing. Today, I'll begin to examine tracing the script… Tracing the script
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These tests and the associated output are shown here: The tester performs four different tests, and each time the function performs as expected. It then combines the two values and outputs a string that states the value is four. The My-function function accepts two command-line parameters: a and b. The problem with logic errorsįor a simple example of a logic error, consider the function called My-function that is shown here:
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But quite often the business rules themselves are causing the problem. At times, it may appear that the switch statement is not working correctly because the wrong value is displayed at the end of the code. These are decisions the code makes that have nothing to do with the correct operation of, for example, a switch statement. The problem often lies in what are called "the business rules" of the script. Most of the time, examining the values of variables does not solve the problem because the code itself works fine. If the error is a logic error, it can be very difficult to troubleshoot. But if a script simply doesn’t work, it can be more difficult to troubleshoot. When I see a script that doesn’t work, I think, "Cool…it is easy to troubleshoot." Often this is the case because the error message helps locate the source of the error. Microsoft Scripting Guy, Ed Wilson, is here. It does not generate any errors, but dude, it does not seem to work either. Hey, Scripting Guy! I am having a problem with a script. Summary : Ed Wilson, Microsoft Scripting Guy, talks about using a cmdlet to trace the execution of a Windows PowerShell script.