$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 $ErrorActionPreference = 'Inquire' #提
Today’s post (and this blog's inaugural post!) is An Introduction to Error Handling in PowerShell. We will discuss error types, the$errorvariable, error action preferences, try/catch blocks, and$lastexitcode. The first requirement is to understand the types of errors that can occur during...
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...
Try, Catch, 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 y...
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 $errorActionPreference="stop"; try { cmd /c nosuchexe } ...
可采用多种不同的方法在 PowerShell 中处理错误。Try/Catch是处理错误的较新式的方法。将 ErrorAction 参数的值指定为 Stop,将非终止错误转换为终止错误 。 functionTest-MrErrorHandling { [CmdletBinding()]param( [Parameter(Mandatory, ValueFromPipeline, ...
虽然上例中的函数使用了错误处理,但由于命令没有产生终止错误,因此会产生未处理异常。 仅捕获终止错误。 指定ErrorAction参数,并以Stop作为其值,将非终止性错误转换为终止错误。 PowerShell functionTest-MrErrorHandling{ [CmdletBinding()]param( [Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName...
This is in large part because the shell has a single parser for all cmdlets—this model allows the dev team to be sure that all argument parsing, error handling, and so on is done similarly for everything that a user might do.As a result, there are some pretty significant differences ...
Error handling The function shown in the following example generates an unhandled exception when a computer can't be contacted. PowerShell Copy function Test-MrErrorHandling { [CmdletBinding()] param ( [Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName)] [string[]]$ComputerName...
Handling Windows PowerShell errors To handle errors in your Windows PowerShell scripts, you can use the–ErrorActionparameter. This is especially useful with theRemovecmdlets. If you want to remove a particular rule, you will notice that it fails if the rule is not found. When removing rules...