How To Associate app for Files With No Extension

Win 10 v1903. I get files from an app and these files do not have an extension. I can open and read them via Notebook but I'd like to assign Notebook to open them when I double click the file name.

Can that be done in Win 10?

-- Larry

With this batch script you can add open with notepad to the windows context menu for all files.

Code:

@Echo Off & Cls

net sess>nul 2>&1||(powershell start cmd -ArgumentList """/c %~0""" -verb Runas & exit)

Cls & Mode CON  LINES=11 COLS=100 & Color 0E & Title Created By FreeBooter
Echo.
Echo.
Echo.
Echo.       
Echo        Do You Want To Add Open with Notepad to the Windows Context Menu for All Files (Y/N)?   
Echo.       
Echo.
Echo.


Set /p input= RESPONSE: 
If /i  Not %input%==Y (Goto :_Ex) Else (Goto :_Start) 

:_Ex
If /i Not %input%==N  (Goto :EOF) Else (Goto :_RegRestore)



:_Start

Reg add "HKCR\*\shell\Open with Notepad\command" /ve /t REG_SZ /d "notepad.exe %%1" /f >Nul
Reg add "HKCR\*\shell\Open with Notepad" /v "Icon" /t REG_SZ /d "C:\Windows\Notepad.exe" /f >Nul

Cls & Mode CON  LINES=11 COLS=45 & Color 0E & Title Created By FreeBooter
Echo.
Echo.
Echo.
Echo.       
Echo        Open with Notepad Enabled   
Echo.       
Echo.
Echo. 
ping -n 6 localhost >nul 


Exit




:_RegRestore

Reg Query "HKCR\*\shell\Open with Notepad" >Nul

If %ErrorLevel% EQU 1 Goto :EOF


Reg.exe delete "HKCR\*\shell\Open with Notepad" /f >Nul


Cls & Mode CON  LINES=11 COLS=45 & Color 0E & Title Created By FreeBooter
Echo.
Echo.
Echo.
Echo.       
Echo        Open with Notepad Disabled   
Echo.       
Echo.
Echo. 
ping -n 6 localhost >nul 

Exit

FreeBooter, I managed to remember how to turn your text script into a .bat file and execute it (as administrator). It works fine!

Thank you!

-- Larry

You are very welcome!