Remove-WmiObject - 删除用户配置文件

Question

这是使用以下 constraints/rules 远程删除用户配置文件的代码：

########## List of accounts/Student profiles older than 21 days and not test accounts to be deleted  #######################



foreach ($computer in (Get-Content e:\cleanupscript\scripts\ComputerList.csv)) {


if(Test-Connection -ComputerName $computer -count 1){
    $userfolders = Get-ChildItem "\$computer\C$\users\"  | Select-Object -ExpandProperty Name
}


#The list of accounts, which profiles must not be deleted
$ExcludedUsers ="Public","administrator","csimg",”DefaultAppPool”, "ksnproxy", "test1","test2","test3","test4","test5","test6","test7","test8","test9","test10","test11","test12","test13","test14","test15","test16","test17","test18","test19","test20","test21","test22","test23","test24","test25","test26","test27","test28","test29","test30","test31","test32","test33","test34","test35","test36","test37","test38","test39","test40","test41","test42","test43","test44","test45","test46","test47","test48","test49","test50","test51","test52","test53","test54","test55","test56","test57","test58","test59","test60","test61","test62","test63","test64","test65","test66","test67","test68","test69","test70","test71","test72","test73","test74","test75","test76","test77","test78","test79","test80","test81","test82","test83","test84","test85"



        $StudentsProfiles = Get-WmiObject -ComputerName $computer -Class Win32_UserProfile | 
            Select-Object   PSComputerName,
                            Sid, 
                            LocalPath, 
                            @{Label='LastUseTime';Expression={$_.ConvertToDateTime($_.LastUseTime)} } |
                        
            
            Where-Object -FilterScript {![System.String]::IsNullOrWhiteSpace($_.LastUseTime)} |
            Where-Object -FilterScript {!($_.LocalPath -eq "C:\Windows\ServiceProfiles\ksnproxy")} |
            Where-Object -FilterScript {!($ExcludedUsers -like ($_.LocalPath.Replace("C:\Users\","")))} |
            Sort-Object -Property {($_.LastUseTime)} |
            Select-Object -First 3 |
         

foreach ($StudentsProfile in $StudentsProfiles)
{

    #Write-Host $StudentsProfile.LocalPath, $computer,  $StudentsProfile.LastUseTime,  "profile existing” -ForegroundColor Red

    
    if (!($ExcludedUsers -like ($StudentsProfile.LocalPath.Replace("C:\Users\",""))))
    {     
        $StudentsProfile | Remove-WmiObject 
        Write-Host $computer, $StudentsProfile.LocalPath, $StudentsProfile.LastUseTime,  "profile deleted” -ForegroundColor Magenta
    }
          
}

}

Remove-WmiObject：输入对象不能绑定到命令的任何参数，因为命令不接受管道输入或输入及其属性与采用管道输入的任何参数都不匹配。在 line:1 char:7

$st | Remove-WmiObject -Authentication Connect
```
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```
- CategoryInfo : InvalidArgument: (@{PSComputerNam...-07 6:49:46 AM}:PSObject) [Remove-WmiObject], ParameterBindingException
- FullyQualifiedErrorId : InputObjectNotBound,Microsoft.PowerShell.Commands.RemoveWmiObject

Answer 1

^{顺便说一句：CIM cmdlet（例如，Get-CimInstance) superseded the WMI cmdlets (e.g., Get-WmiObject) in PowerShell v3 (released in September 2012). Therefore, the WMI cmdlets should be avoided, not least because PowerShell (Core) (v6+), where all future effort will go, doesn't even have them anymore. Note that WMI still underlies the CIM cmdlets, however. For more information, see this answer.}

当Remove-WmiObject receives input from the pipeline, it expects input objects of type System.Management.ManagementObject时，绑定到它的-InputObject参数。
相比之下，您的 $StudentsProfiles 变量不包含此类型的对象，因为您已应用 Select-Object with 属性 names 到原始 Get-WmiObject 调用，它创建通用类型的对象，[pscustomobject]，即 与输入对象的类型，并且只包含指定的属性，其值是从输入对象的同名属性中复制的。

因此，将集合 $StudentsProfiles 中的对象传送到 Remove-WmiObject 会导致您看到的错误：输入对象的类型错误。

解决方案:

省略 Select-Object PSComputerName, ... 调用并将管道限制为仅过滤（Where-Object 调用，Select-Object 调用 -Last) 和 sorting 命令，它们都不会改变输入对象的身份：

使用流水线的简化版本：

$StudentsProfiles = Get-WmiObject -ComputerName $computer -Class Win32_UserProfile | 
  Where-Object -FilterScript {
    $_.LastUseTime -and 
      $_.LocalPath -ne "C:\Windows\ServiceProfiles\ksnproxy" -and
        (Split-Path -Leaf $_.LocalPath) -notin $ExcludedUsers
  } |
    Sort-Object LastUseTime |
      Select-Object -First 3

注意：$_.ConvertToDateTime($_.LastUseTime) - 即显式转换为 [datetime] - 实际上并不需要：

要测试值是否为非空（非空），$_.LastUseTime——这是一个代表时间戳的字符串，可以按原样使用，因为将 $null 或 ''（空字符串）解释为布尔值会导致 $false，而任何 nonempty 字符串会产生 $true.
类似地，LastUseTime 可以传递给 Sort-Object 以按此属性值直接排序，因为时间戳的字符串表示 - 例如'20211110143544.500000-300' - 以词法排序等同于时间排序的方式构建。

顺便说一句：首选 CIM cmdlet 在这方面优于 WMI cmdlet：它们将时间戳直接表示为 [datetime] - 无需转换。

Remove-WmiObject - 删除用户配置文件

Remove-WmiObject - Delete User Profiles

powershell

wmi

wmi-query

user-profile

script