Windows won't let you delete, move, or rename a file if a program is using it. Frustratingly, it also won't tell you which program is using the file so that you can solve the problem.

Because you get the file object at the end of the pipeline you could do whatever you want. Perhaps you want to delete the file. The del command is an alias for Remove-Item and one you are probably ...

Although native support for Secure File Transfer Protocol (SFTP) is not in PowerShell, by using a free module, you can retrieve, delete and add new files.