Get List of File Associated with multiple Changesets

I wrote a cmdlet for powershell by which you can get list of file associated with list of changesets.

param(
     [string] $changesets = $(throw 'Usage: Get-Changeset-Files 'changesets')
)

process
{
     # get TFS object
     $tfs = get-tfs ;
   
     # build up list of file items    
     $fileItems = @();
   
     $changesets.Split(',') | foreach {
       $tfs.vcs.GetChangeset($_).Changes | foreach {
           if($fileItems -notcontains $_.Item.ServerItem) {
               $fileItems += $_.Item.ServerItem;
           }
       }
     }
   return $fileItems | Sort-Object;
}

Steps:
1. Create a file Get-Changeset-Files.ps1 and copy above code in the file (preferably where get-tfs resides). Also add this directory into your $path
2. Open Powershell, go to Directory where above file recides
3. Run 'Set-ExecutionPolicy unrestricted' so that you can run above cmdlet
4. Everything is ready.. just run for example: Get-Changeset-Files('10, 20, 30')

See here for get-tfs.ps1