行为不一致：GCI /-包含

Question

I'm working on an automated cleanup script that uses Get-ChildItem pretty liberally. I filter the contents to clean from an XML configuration with the -Include flag since it takes a string array while -Filter does not. Here's the offending block in question:

Function CleanFolders
{
  Write-Log 'Cleaning Folders..' status

  ForEach ($Folder in $Config.OS.$Build.Folders.Folder)
  {
    If (Test-Path $Folder.Name)
    {
      Try {
        GCI $Folder.Name -Include $Folder.Include -Recurse -Force |
          Where { ($_.Length -gt ([Int]$Folder.Threshold * 1MB)) -and
                  ($_.LastWriteTime -lt (Get-Date).AddDays(-[Int]$Folder.Expiration)) } |
          Sort $_.IsPSContainer -Descending |
          % {
            Try {
              Write-Log "Deleting $($_.FullName)"
              Remove-Item "$($_.FullName)" -Force
            } Catch {
              Write-Log 'Unable to delete item' error
              Write-Log "[$($_.Exception.GetType().FullName)] - $($_.Exception.Message)" error
            }
          }
      } Catch { Write-Log "[$($_.Exception.GetType().FullName)] - $($_.Exception.Message)" error }
    } Else { Write-Log "$($Folder.Name) does not exist" error }
  }
}

The script is run from a scheduled task as SYSTEM and for some reason, is not returning results from the -Include flag that are not just a wildcard * . Are there known issues with -Include ? This operation runs properly when run as a user account with admin privileges.

Answer 1

I found the problem with my script was my method of getting the xml into a variable. I was using Get-Content which did not preserve any formatting or type information, rather than Import-CliXml . This was causing the Get-ChildItem -Include arguments to be entered as a single string rather than a string array (since they were comma-separated in the xml).

My resolution around this was creating an object with defined types (such as the expected string array ( String[] ) rather than worrying about creating/exporting/importing an xml file.

$global:Config = @{
  OS = @{
    Workstation = @{
      Folders = @( @{ Name=..;Include=..;Expiration=..;Threshold=..;} );
    };
  };
};