If you're struggling to find WMI Class definitions it might be because half the useful ones are listed under Win32 Classes.
Get started with a remote Git repository
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Grep for Windows is FindStr
Grrr. Where's grep when you need it on a Windows box? No, you don't need cygwin. You just need:
And yes it does regular expressions. For example:
Echo "Here Is A Sentence" | Findstr /i "\<Sen[a-zA-Z]*e\>" TaskList /v | findstr /i "Where[']sGrep.exe"