Question

我想比较两个csv文件并创建具有差异的第三个csv文件。

第一个csv文件是这样的

Name     PowerState
----     ----------
vm1      VM deallocated
vm2      VM deallocated
vm3      No data
vm4      No data
vm5      VM deallocated

第二个csv：

Name     PowerState
----     ----------
vm1      VM deallocated
vm2      VM running
vm3      VM running
vm4      VM deallocated
vm5      VM deallocated

我想与powershell进行比较，所以这是我的代码：

$csv1 = Import-Csv -Path c:\temp\csv1.csv
$csv2 = Import-Csv -Path c:\temp\csv2.csv

 $output = @()
   forEach ($Row in $csv1) {    
     $powerstate = "ShutdownScriptState: " + $Row.PowerState + " | Now: " + $result.PowerState
     $output += New-object PSObject -property @{
       Name = $Row.Name
       PowerState = $powerstate
     }
   }

   $result = $csv2 | where {$_.csv2 -ne $name.PowerState}


 $output | select-object Name, PowerState | Export-Csv -Path C:\temp\final.csv -NoTypeInformation -delimiter ","

但是在输出final.csv时不完整：

Name            PowerState
----            ----------
adfs            ShutdownScriptState: VM deallocated | Now: 
adfs40          ShutdownScriptState: VM deallocated | Now: 
ardal           ShutdownScriptState: No data | Now: 
backupDPM       ShutdownScriptState: No data | Now: 
BizTalk2016     ShutdownScriptState: VM deallocated | Now:

现在缺少：（$ result.PowerState）

我不明白。

Answer 1

我将使用Compare-Object进行比较，然后在Name上分组以并排获得差异。

## Q:\Test\2018\07\19\SO_51428482.ps1
$csv1 = Import-Csv -Path 'c:\temp\csv1.csv'
$csv2 = Import-Csv -Path 'c:\temp\csv2.csv'

$Result = Compare-Object $csv1 $csv2 -Property Name,PowerState |
  Group-Object Name | ForEach-Object{
      [PSCustomObject]@{
          Name  = $_.Name
          Powerstate_1st = ($_.Group | Where SideIndicator -eq "<=").Powerstate
          Powerstate_Now = ($_.Group | Where SideIndicator -eq "=>").Powerstate
      }
  }
$Result
$Result | Export-Csv '.\final.csv' -NoTypeInformation

样本输出

Name Powerstate_1st Powerstate_Now
---- -------------- --------------
vm2  VM deallocated VM running
vm3  No data        VM running
vm4  No data        VM deallocated

要准确地将您的所需输出更改为{strong> ，

[PSCustomObject]

[PSCustomObject]@{
    Name  = $_.Name
    Powerstate = ("ShutdownScriptState: {0} | {1}" -f `
       ($_.Group | Where SideIndicator -eq "<=").Powerstate,
       ($_.Group | Where SideIndicator -eq "=>").Powerstate)
}

Answer 2

在设置变量之前，您尝试从其他范围访问$Result变量。

移动

$result = $csv2 | where {$_.csv2 -ne $name.PowerState}

在ForEach循环中

之前

$powerstate = "ShutdownScriptState: " + $Row.PowerState + " | Now: " + $result.PowerState

您还需要将该行更改为：

$result = $csv2 | where {$_.Name -eq $Row.Name}

Answer 3

您无序访问变量，无法正确比较。此代码段应该可以简洁地解决您的问题：

$csv1 = Import-Csv -Path c:\temp\csv1.csv
$csv2 = Import-Csv -Path c:\temp\csv2.csv

$output = foreach ($row in $csv1) {
    $compare = $csv2 | Where-Object Name -eq $row.Name
    if ($row.PowerState -ne $compare.PowerState) {
        [pscustomobject]@{
            Name       = $row.Name
            PowerState = "ShutdownScriptState: $($row.PowerState) | Now: $($compare.PowerState)"
        }
    }
}

$output | Export-Csv -Path C:\temp\final.csv -NoTypeInformation

在Powershell中比较两个csv文件时，我在哪里出错？

3 个答案: