具有多个值显示输出 [英] Displaying output with multiple values

问题描述

Get-EC2Instance |%{ $_.RunningInstance } | 
    select-object InstanceId,LaunchTime,@{Name='Value'; Expression={$_.Tag.Value} }, @{Name='Key'; Expression={$_.Tag.Key} }

每个价值和重点有多个值，你可以在截图中看到。如何改写code所以输出可以是这样的：

Each Value and Key have multiple values as you can see in the screenshot. How to rewrite the code so the output can look like:

推荐答案

下面是一个解决方案;这不是最优雅的，但希望解决您的问题：

Here's one solution; it's not the most elegant, but hopefully solves your problem:

为您的使用案例

Get-EC2Instance | `
    %{ 
        $x = $.RunningInstance;
        $x.Tag | select-object 
             @{Name="InstanceId"; Expression={$x.InstanceId}}
            ,@{Name="LaunchTime"; Expression={$x.LaunchTime}}
            ,@{Name="Value";      Expression={$_.Value}}
            ,@{Name="Key";        Expression={$_.Key}};
    } 

简单的演示

cls
$x = @(
     (New-Object –TypeName PSObject –Prop @{Name='one';List=@('a','b','c');})
    ,(New-Object –TypeName PSObject –Prop @{Name='two';List=@('d','e','f');})
    ,(New-Object –TypeName PSObject –Prop @{Name='three';List=@('g','h','i');})
    ,(New-Object –TypeName PSObject –Prop @{Name='four';List=@('j','k','l');})
    ,(New-Object –TypeName PSObject –Prop @{Name='five';List=@('m','n','o');})
)

#show what the preparation code produced:
#$x | select Name, List

#show the output we're after
$x | %{$n=$_.Name; $_.List | select @{Name="Name";Expression={$n}},@{Name="ListValue";Expression={$_}}}

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