1. remove some text on file name of all files: e.g. “TVBOXNOW ”
| 1 | ls | Rename-Item -NewName { $_.name -replace "TVBOXNOW ", "" } | 
2. move up one level of files in each directory, e.g. c:\folder1\folder2\file3 to c:\folder1\file3
| 1 2 3 4 5 6 | $files = Get-ChildItem -Recurse "c:\folder1" | where {$_.PSIScontainer -eq $false} foreach ($file in $files) {   $destinationFolder = Split-Path -Parent $file.Directory.FullName   move-item $file.FullName $destinationFolder } | 
3. Remove files by extension for all subdirectories: e.g. .url / .nfo
| 1 | Get-ChildItem -File -Include *.url,*.nfo -Recurse | foreach ($_) {Remove-Item $_.FullName} | 
4. see unique file extension in all subdirectories
| 1 | Get-Childitem -File -Recurse | Select-Object Extension -Unique | 
5. file name format: xxxx.2013.zzzz, …

