arrays - 在Powershell中打印阵列

Question

我正在尝试打印一个数组(我尝试了一个for循环，并直接尝试了.ToString())，但是我总是得到System.Object输出。

数组的内容是此命令的结果:

$singleOutput = Invoke-Command -ComputerName $server -ScriptBlock {
    Get-ChildItem C:\*.txt -Recurse |
        Select-String -Pattern "password" -AllMatches
}

这是我得到的输出:

System.Object[]

What am I missing?

EDIT:

This is the whole function:

foreach ($server in $servidores) {
    $result = @()
    Write-Output ("---Searching on Server:---" + $server + "----at:" +
        (Get-Date).ToString() + "----")
    $singleOutput = Invoke-Command -ComputerName $server -ScriptBlock {
        Get-ChildItem C:\*.txt -Recurse |
            Select-String -Pattern "password" -AllMatches
    }
    $result += $singleOutput

    Write-Host $result.ToString()
}
Read-Host -Prompt "Press Enter to exit"

我也尝试过:

foreach ($i in $result) {
    $result[$i].ToString()
}

Answer 1

您正在使用Select-String，它会生成MatchInfo对象。因为看起来您想要文件中的所有匹配行，所以您可能应该只返回Line对象的MatchInfo属性的值。另外，数组处理也太复杂了。只需输出Invoke-Command返回的任何内容，并将循环输出捕获到变量中即可。对于循环内的状态输出，请使用Write-Host，这样消息就不会被$result捕获。

$result = foreach ($server in $servidores) {
    Write-Host ("--- Searching on Server: $server at: " + (Get-Date).ToString())
    Invoke-Command -ComputerName $server -ScriptBlock {
        Get-ChildItem C:\*.txt -Recurse |
            Select-String -Pattern "password" -AllMatches |
            Select-Object -Expand Line
    }
}

如果还需要主机名，则可以添加一个 calculated property并返回自定义对象:

$result = foreach ($server in $servidores) {
    Write-Host ("--- Searching on Server: $server at: " + (Get-Date).ToString())
    Invoke-Command -ComputerName $server -ScriptBlock {
        Get-ChildItem C:\*.txt -Recurse |
            Select-String -Pattern "password" -AllMatches |
            Select-Object @{n='Server';e={$env:COMPUTERNAME}},Line
    }
}

您只需通过回显array变量即可输出数组:

PS C:\> $resultServer    Line------    ----...       ...

To get custom-formatted output you can for instance use the format operator (-f):

$result | ForEach-Object {
  '{0}: {1}' -f $_.Server, $_.Line
}