如果该值设置为false,则if ((Test-Path -LiteralPath variable:\LASTEXITCODE)) { exit $LASTEXITCODE }行将追加到脚本的末尾。 这将导致外部命令中的最后一个退出代码作为powershell的退出代码传播。 否则,该行不会追加到脚本的末尾。 pwsh-使用 PowerShell Core ...
Don't modify the global $ErrorActionPreference variable unless absolutely necessary. If you change it in a local scope, it reverts to the previous value when you exit that scope. If you're using something like .NET directly from within your PowerShell function, you can't specify the Error...
Windows PowerShell reserves a few parameter names, referred to as Common parameters, which you can't use: WhatIf, Confirm, Verbose, Debug, ErrorAction, ErrorVariable, OutVariable, and OutBuffer. In addition, the following aliases for these parameter names are reserved: vb, db, ea, ev, ov...
$PSDefaultParameterValues= @{"Send-MailMessage:SmtpServer"="Server123";"Get-WinEvent:LogName"="Microsoft-Windows-PrintService/Operational"} 使用通配符和开关参数 cmdlet 和参数名称可以包含通配符。 使用$True和$False设置开关参数的值,例如详细。 对于所有命令,通用参数的Verbose参数都设置为$True。
A class declaration is a blueprint used to create instances of objects at run time. When you define a class, the class name is the name of the type. For example, if you declare a class namedDeviceand initialize a variable$devto a new instance ofDevice,$devis an object or instance of...
This time, the contents of the file are stored in the variable $names. This example still uses foreach, but it isn't being input through a pipeline, so you have to tell it which collection of objects to loop through and what variable to store each object in—the part that says ($...
I needed to figure out a way to load the PowerShell engine. First, there are a couple of requirements to make this all work. Dotnet has to be available, as does PowerShell andpythonnetprovides a way to specify where to look for dotnet. Setting the environment variableDOTNET_ROOTto the ...
Additionally, instead of using an explicit $loaded variable, I could have used the Windows PowerShell break statement to exit the delay loop. Windows PowerShell has a rich set of control structures that allow you to program in many different styles, including whatever programming style you are ...
class, and it produces an all-lowercase representation of the string's value. It doesn't change the actual contents of the variable $var, though. To see a complete list of everything the System.String class is capable of doing, pipe a string variable to the Get-Member cmdlet, like this...
# Modified from the built-in prompt function at: https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_prompts function prompt { $(if (Test-Path variable:/PSDebugContext) { "$($Flavor.Red.Foreground())[DBG]: " } else { '' }) + "$($Flavor.Teal...