对于错误,powershell 提供变量设置 -ErrorVariable 可将错误存储到变量中,变量只保留最后一次执行的错误信息。这样可以设置不让脚步出错而终止。 Remove-Item "WrongFile" -ErrorVariable ErrorVar -ErrorAction "SilentlyContinue" $ErrorVar Get-WmiObject Win32_Service –comp "Server" -ErrorVariable ErrorVar -Error...
在PowerShell 7中尝试catch后访问变量时出错PowerShell v7 +ForEach-Object-Parallel特性使用单独的、基于...
问Powershell:在Catch块中引发异常终止，但不将异常输出到控制台EN如果没有 try 和 except 语句覆盖抛出...
Once you are inside a catch block you can access the error record, which is stored in the current object variable, $_. Error records have various useful properties, but the main one you will want to access is $_.Exception. Exceptions are what we are really dealing with here as we catch...
删除变量:Clear-Variable -Name var或者clv var 查看变量类型:$var.GetType() 作用域:$[<scope-modifier>:]<name> = <value> 自动变量[5] 常用自动变量 $?:上一次执行成功。成功返回True $$:返回上一个指令的最后一个令牌(token) $^:返回第一个token ...
PS>$null-eq$undefinedVariableTrue 如果碰巧错误键入变量名称,PowerShell 会将它视为不同的变量,并且值为$null。 找到$null值的另一种方法是,当它们来自未提供任何结果的其他命令时。 PowerShell PS>functionGet-Nothing{} PS>$value=Get-NothingPS>$null-eq$valueTrue ...
关键字 (keyword)catch必须紧跟在try块或其他catch块后面。 PowerShell 无法将“NonsenseString”识别为 cmdlet 或其他项。 运行此脚本将返回以下结果: PowerShell An error occurred. 当脚本遇到“NonsenseString”时,会导致终止错误。 块catch通过在块内运行 语句列表来处理错误。
Can you pass a variable to a SQL Script with invoke-sqlcmd? Can you use PowerShell to change Group Policies? Can you write to an open excel file using powershell? can't catch an error from rename-item Can't get [DateTime]::TryParseExact to work using PowerShell Can't get get-adcom...
如果在没有表达式的catch块中使用throw关键字,它将再次引发当前 RuntimeException。 有关详细信息,请参阅about_Try_Catch_Finally。 引发字符串 throw语句中的可选表达式可以是字符串,如以下示例所示: PowerShell throw"This is an error." Output Exception: This is an error. ...
$log=Get-WinEvent-ListLogSecurity$log.MaximumSizeInBytes =1gbtry{$log.SaveChanges()Get-WinEvent-ListLogSecurity |Format-List-Property* }catch [System.UnauthorizedAccessException]{$ErrMsg='You do not have permission to configure this log!'$ErrMsg+=' Try running this script with administrator privi...