如何使用 Powershell 只读取 csv 文件中的一列

Question

我正在处理 powershell 脚本，我试图从我的 csv 文件中只读取“用户”列，然后将其转换为他们的 Microsoft AzureAD 显示名称，但不确定如何操作，所以我会如果我能得到任何帮助或建议，我将不胜感激。

我的 csv 文件是这样的

C:\AuditLogSearch$($CurDate) Final Audit-Log-Records.csv

User       Date &Time       Activity
-------------------------------------
abc@gmail.com   11/22/2021     play soccer
kei@gmail.com   10/22/2021     play football
def@gmail.com   11/22/2021     play soccer
def@gmail.com   09/22/2021     play Baseball
xyz@gmail.com   08/22/2021     play soccer
klm@gmail.com   19/22/2021     play football

function Connect-AzureActiveDirectory {
    $pso = New-PSSessionOption -SkipCACheck:$true -SkipCNCheck:$true -SkipRevocationCheck:$true -OperationTimeout 180000 -ProxyAccessType AutoDetect
    Connect-AzureAD -Credential $credential -ConnectionUri https://outlook.office365.com/PowerShell-LiveID -PSSessionOption $pso
    $host.ui.RawUI.WindowTitle = "Exchange Online - NAM Production Beta MFA"
    Write-Host "Connected to Azure AD"      
}


function Convert-UserColumn {
    $ImportFile = "C:\AuditLogSearch$($CurDate) Final Audit-Log-Records.csv"
    $ExportFile = "C:\AuditLogSearch\FinalFile.csv"

// I'm struggling with the logic here

    $list = @() foreach ($u in $ImportFile.User) {
        $list += Get-AzureDisplayName -mail $u
        
    }

    Get-AzureADUser -ObjectId 

   | Export-Csv $ExportFile -NoTypeInformation
}

尝试制作最终导出的 csv 文件应该如下所示 C:\AuditLogSearch\FinalFile.csv

User       Date &Time       Activity
-------------------------------------
Jonathan Sparkle   11/22/2021     play soccer

Randy Mod       10/22/2021     play football
Hanah P         11/22/2021     play soccer
Hanah P         09/22/2021     play Baseball
Cristiano Ronaldo   08/22/2021     play soccer
Leo Messi    19/22/2021     play football

Answer 1

您可以只更新导入的 CSV User 属性上的值，无需创建 $list = @() 来保存结果。

假设 $ImportFile.User 包含有效的 UserPrincipalNames Azure AD 用户，您遇到的问题将如下所示（绝对不需要函数）：

$ImportFile = Import-Csv "C:\AuditLogSearch$($CurDate) Final Audit-Log-Records.csv"
$ExportFile = "C:\AuditLogSearch\FinalFile.csv"

foreach ($u in $ImportFile) {
    $u.User = (Get-AzureADUser -ObjectId $u.User).DisplayName
}

$ImportFile | Export-Csv $ExportFile -NoTypeInformation

我正在尝试更改 Activity 列 value/text。例如，如果 text = "play soccer" 然后将其更改为 "play futball" 或者如果 text = "play football" 然后将其更改为 "play rugby" 等等..

这需要 if 个条件或 switch。即：

# Using this as an Example
$csv = @'
User,Date & Time,Activity
abc@gmail.com,11/22/2021,play soccer
kei@gmail.com,10/22/2021,play football
def@gmail.com,11/22/2021,play soccer
def@gmail.com,09/22/2021,play Baseball
xyz@gmail.com,08/22/2021,play soccer
klm@gmail.com,19/22/2021,play football
'@ | ConvertFrom-Csv

foreach($line in $csv)
{
    $line.Activity = switch($line.Activity)
    {
        'play soccer' { 'play futball'; break }
        'play football' { 'play rugby'; break }
        Default { $_ } # If no matches, leave it as is
    }
}

$csv | Format-Table

User          Date & Time Activity
----          ----------- --------
abc@gmail.com 11/22/2021  play futball
kei@gmail.com 10/22/2021  play rugby
def@gmail.com 11/22/2021  play futball
def@gmail.com 09/22/2021  play Baseball
xyz@gmail.com 08/22/2021  play futball
klm@gmail.com 19/22/2021  play rugby

如何使用 Powershell 只读取 csv 文件中的一列

How to read only one column from csv file using Powershell

powershell

azure

powershell-2.0

azure-active-directory