$ErrorActionPreference = 'SilentlyContinue' #错误不抛出,脚本也会继续执行。 $ErrorActionPreference = 'Continue' #将错误抛出来,但是脚本会继续往下执行 $ErrorActionPreference = 'Stop' #错误发生时,终止脚本执行 $ErrorActionPreference = 'Inquire' #提供选项由用户选择Error Action 1. 2. 3. 4. 5. 6. ...
is An Introduction to Error Handling in PowerShell. We will discuss error types, the $error variable, error action preferences, try/catch blocks, and $lastexitcode. The first requirement is to understand the types of errors that can occur during execution. Terminating vs. Non-Terminating Errors...
They all were missing error handling. There was no regard to user experience or tendency to handle errors so that the script has greater chance to succeed and when it doesn’t, use has better information on what went wrong. I discussed this with Ed Wilson (That’s “The Scripting Gu...
Using -ErrorVariable When you run a PowerShell cmdlet and an error occurs, the error record will be appended to the automatic variable named $error. When you use the -ErrorVariable parameter in a call to a command, the error is assigned to the variable name that you specify. Even when ...
可采用多种不同的方法在 PowerShell 中处理错误。Try/Catch是处理错误的较新式的方法。将 ErrorAction 参数的值指定为 Stop,将非终止错误转换为终止错误 。 functionTest-MrErrorHandling { [CmdletBinding()]param( [Parameter(Mandatory, ValueFromPipeline, ...
Finallyis similar to a Trap block. Trap blocks generally catch any errors in the scope of the entire script or function. The beauty ofTry, Catch, Finallyis that it is like a localized Trap for a specific block of commands. This gives you great flexibility in your error han...
I discovered recently that the handling of stderr from native commands isn't being dealt with consistently between Windows PowerShell and Windows PowerShell ISE. Steps to reproduce $errorActionPreference="stop"; try { cmd /c nosuchexe } ...
as compiled cmdlets, while writing them in Windows PowerShell script syntax. One of the benefits of developing cmdlet-style commands instead of basic functions, is that they offer a few “common parameters.” Two of these common parameters are related to error handling:-ErrorActionand-Error...
虽然上例中的函数使用了错误处理,但由于命令没有产生终止错误,因此会产生未处理异常。 仅捕获终止错误。 指定ErrorAction参数,并以Stop作为其值,将非终止性错误转换为终止错误。 PowerShell functionTest-MrErrorHandling{ [CmdletBinding()]param( [Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName...
Error handling The function shown in the following example generates an unhandled exception when a computer can't be contacted. PowerShell functionTest-MrErrorHandling{ [CmdletBinding()]param( [Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName)] [string[]]$ComputerName)process{for...