Reply To: Remove folders in a directory but keep the three latest (creation date)

Two cool things Powershell does is Sort easily and also has -WhatIf for testing. If the Powershell version is v3 or higher, you can use -Directory versus the PSIsContainer logic:

$files = Get-ChildItem C:\Websites -Directory | Select Name, CreationTime, FullName | Sort CreationTime
 
$files
 
for ($i=0;$i -lt ($files.Count -2);$i++) {
    Remove-Item $files[$i].FullName -WhatIf
}
 
 
Name                                      CreationTime                              FullName                                
—-                                      ————                              ——–                                
Ver3                                      7/13/2014 9:31:14 AM                      C:\Websites\Ver3                        
Ver1                                      8/14/2014 9:22:50 AM                      C:\Websites\Ver1                        
Ver2                                      8/14/2014 9:22:58 AM                      C:\Websites\Ver2                        
Ver4                                      8/14/2014 9:23:17 AM                      C:\Websites\Ver4                        
Ver5                                      8/14/2014 9:43:40 AM                      C:\Websites\Ver5                        
 
What if: Performing the operation "Remove Directory" on target "C:\Websites\Ver3".
What if: Performing the operation "Remove Directory" on target "C:\Websites\Ver1".
What if: Performing the operation "Remove Directory" on target "C:\Websites\Ver2".

You can even manipulate the CreationTime of files\folders for amusement:

(Get-Item C:\Websites\Ver5).CreationTime = (Get-Date).AddDays(-54)