I have a lot of cnc files I need to change the extension from. PGM to. How is this work if I want to change all of a TXT file

I am copying my files on my book reader cnc program. The problem is that the reader does not recognize the extension. PGM that I use on my cnc machines. I would change all the extensions at once to. TXT as there are that many of them. I can change one at a time, but it would take a very long time. Is it possible to do this?

Use the command prompt:

REN *.pgm *.txt

Tags: Windows

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