检查OU是否已经存在

Question

此脚本基于CSV创建OU，并将它们放入MyLab OU中，并创建2个子OU。它还检查CSV中的OU是否已经存在，然后输出它。我一直试图弄清楚如何为SubOU做到这一点，所以如果其中一个存在，另一个仍然是创建的。有人能为我指明正确的方向吗？

#Imports CSV file
$MyOUs = Import-csv C:\OUs.csv -Delimiter ","

#Sets parent path to main OU
$ParentPath = "OU=MyLab,DC=MyLab,DC=local"

#Perform actions for each OU in the CSV file
foreach ($OU in $MyOUs){
$Name = $OU.Name 

#Check if an OU within the CSV file already exists
$Check = Get-ADOrganizationalUnit -filter * | Where-Object {$_.name -eq $OU.name} | select name

#If it does the text within the write-host is output
if ( $OU.name -eq $Check.name) {
    write-host $OU.name "OU already exists"}

#if not the OU is created, with a 2 sub ous created within it 
else{New-ADOrganizationalUnit -Name $Name -Path $ParentPath -ProtectedFromAccidentalDeletion $false

    $SubOUs = "Department1", "Department2"
    $subPath = "OU="+$OU.name+","+$ParentPath
    
    foreach ($SubOU in $SubOUs){
    New-ADOrganizationalUnit -Name $SubOU -Path $subPath -ProtectedFromAccidentalDeletion $false
    }
}

}

Answer 1

要始终创建子of，可以在创建父of的if之外执行另一个if检查。这是我保持大多数事物不变的方法，但是改进了对OU的检查：

#Imports CSV file
$MyOUs = Import-csv C:\OUs.csv -Delimiter ","
#Query existing OUs only once at the start
$existingOUs = Get-ADOrganizationalUnit -filter * 

#Sets parent path to main OU
$ParentPath = "OU=MyLab,DC=MyLab,DC=local"

#Perform actions for each OU in the CSV file
foreach ($OU in $MyOUs){
  # Build distinguished name
  $DN = "OU="+$OU.name+","+$ParentPath

  #check for OU in existing list
  if ($existingOUs.DistinguishedName -contains $DN) { write-host $OU.name "OU $DN already exists" }
  else { 
    New-ADOrganizationalUnit -Name $Name -Path $ParentPath -ProtectedFromAccidentalDeletion $false 
  }

  # then create 2 sub OUs within each $OU
  $SubOUs = "Department1", "Department2"
  foreach ($SubOU in $SubOUs){
    $SubDN = "OU="+$SubOU.name+","+$DN
    
    # check if sub OU exists
    if ($existingOUs.DistinguishedName -contains $SubDN) { write-host $OU.name "OU $DN already exists" }
    else { 
      New-ADOrganizationalUnit -Name $SubOU -Path $DN -ProtectedFromAccidentalDeletion $false 
    }
  }
}