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
首先看看where-object筛选: Get-WmiObject -Class Win32_Product -ComputerName . | Where-Object -FilterScript {$_.Name -eq "Microsoft .NET Framework 2.0"} | Format-List -Property * 1. 下面是WQL语法筛选的两种格式(一个是常规方式,另外一个是转义符方式) Get-WmiObject -Class Win32_Product -Comput...
Where-Object 参考 反馈 模块: Microsoft.PowerShell.Core 根据集合的属性值从集合中选择对象。 语法 PowerShell Where-Object[-InputObject <PSObject>] [-Property] <String> [[-Value] <Object>] [-EQ] [<CommonParameters>] PowerShell Where-Object[-InputObject <PSObject>] [-FilterScript] <ScriptBlock...
雖然可以使用比較運算符,如先前範例所示,我通常會使用它們搭配Where-ObjectCmdlet 來執行篩選。 總結 您在本章學習了幾個主題,包括正確格式化、別名、供應商和比較運算子。 回顧 為什麼必須盡可能向右進行格式化? 如何判斷%別名對應的實際 cmdlet 是什麼?
PowerShell Where-Object的用法示例 FilterScript 值是计算结果为 True 或 False 的脚本块,即由大括号 {} 括起来的一个或多个 Windows PowerShell 命令。这些脚本块可能非常简单,但是创建它们需要了解有关 Windows PowerShell 的另一个概念,即比较运算符。 比较运算符比较其每一侧显示的项。比较运算符以“-”...
public: property System::Management::Automation::ScriptBlock ^ FilterScript { System::Management::Automation::ScriptBlock ^ get(); void set(System::Management::Automation::ScriptBlock ^ value); }; Property Value ScriptBlock Attributes ParameterAttribute Applies to 產品版本 PowerShell SDK 7.2.0,...
Provides access to the FilterScript parameter. C++ 複製 public: property System::Activities::InArgument<System::Management::Automation::ScriptBlock ^> ^ FilterScript { System::Activities::InArgument<System::Management::Automation::ScriptBlock ^> ^ get(); void set(System::Activities::InArgument...
functionGet-CmdletAlias($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...
s Pocket Consultant(《Windows PowerShell 2.0 管理员的袖珍顾问》)(Microsoft Press,2009)中第 5 章“导航核心 Windows PowerShell 结构”中的标题为“使用表达式和运算符”的一节。 要代替使用 WHERE 语句的备用方法是使用 -filter 参数,后者使用与 WHERE 语句相同的语法,并可以生成相同结果。不过,-filter ...
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. ...