Filter left is the concept that items should be filtered as early as possible in the command to limit the number of results passed through the pipeline, increasing performance. While it’s not always possible to filter before theWhere-Objectcmdlet, many commands provide filterable parameters. A c...
首先看看where-object筛选: Get-WmiObject -Class Win32_Product -ComputerName . | Where-Object -FilterScript {$_.Name -eq "Microsoft .NET Framework 2.0"} | Format-List -Property * 1. 下面是WQL语法筛选的两种格式(一个是常规方式,另外一个是转义符方式) Get-WmiObject -Class Win32_Product -Comput...
Where-Object[-InputObject <PSObject>] [-Property] <String> [[-Value] <Object>] [-EQ] [<CommonParameters>] PowerShell Where-Object[-InputObject <PSObject>] [-FilterScript] <ScriptBlock> [<CommonParameters>] PowerShell Where-Object[-InputObject <PSObject>] [-Property] <String> [[-Value]...
雖然可以使用比較運算符,如先前範例所示,我通常會使用它們搭配 Where-Object Cmdlet 來執行篩選。 總結 您在本章學習了幾個主題,包括正確格式化、別名、供應商和比較運算子。 回顧 為什麼必須盡可能向右進行格式化? 如何判斷 % 別名對應的實際 cmdlet 是什麼? 為什麼您不應該在儲存的腳本中使用別名,或與您其...
PowerShell Where-Object的用法示例 FilterScript 值是计算结果为 True 或 False 的脚本块,即由大括号 {} 括起来的一个或多个 Windows PowerShell 命令。这些脚本块可能非常简单,但是创建它们需要了解有关 Windows PowerShell 的另一个概念,即比较运算符。 比较运算符比较其每一侧显示的项。比较运算符以“-”...
public: property System::Management::Automation::ScriptBlock ^ FilterScript { System::Management::Automation::ScriptBlock ^ get(); void set(System::Management::Automation::ScriptBlock ^ value); }; Property Value ScriptBlock Attributes ParameterAttribute Applies to 產品版本 PowerShell SDK 7.2.0,...
functionGet-CmdletAlias($cmdletName) {Get-Alias|Where-Object-FilterScript{$_.Definition-like"$cmdletName"} |Format-Table-PropertyDefinition, Name-AutoSize} 自定义主机 PowerShell functionCustomizeConsole {$hostTime= (Get-ChildItem-Path$PSHOME\pwsh.exe).CreationTime$hostVersion="$($Host.Version.Majo...
Use logical operators (-and,-or,-xor,-not,!) to connect conditional statements into a single complex conditional. For example, you can use a logical-andoperator to create an object filter with two different conditions. For more information, seeabout_Logical_Operators. ...
结果。不过,-filter 参数是在服务器上运行。如果使用管道将 Get-SPContentDatabase cmdlet 的结果输送到 WHERE语句,将导致 SQL 往返于 Windows Power 客户端正在运行的位置。使用 -filter 参数可以提高性能,从而允许该命令利用 SQL 的筛选功能,而不是尝试本地搜索。不过,在使用 filter 参数时,SPSite cmdlet ...
IsNullOrUndefinedFilterTypeConverter.CanConvertTo(Object, Type) MethodReference Feedback DefinitionNamespace: Microsoft.Azure.PowerShell.Cmdlets.EventGrid.Models Assembly: Az.EventGrid.private.dll Determines if the sourceValue parameter can be converted to the destinati...