Have you ever been organizing photos from a trip and thought, "I want to change these PNGs to JPEGs all at once"?

I have a client that has used WordPerfect for ages and apparently many years ago it did not automatically give files it saved an extension, the users were able to save files with whatever extension ...

PowerShell commands such as Get-Help, Get-Command, Get-Process, Start-Process, Stop-Process, Get-Service, Stop-Service, Get-Content, Get-ChildItem, Copy-Item, Move ...