Can anyone help me create code to accomplish the following:

I have a folder that has a bunch of text files in it. I would like to
programatically open each file in a folder that contains the text '_MAST' in
it, copy the contents, and then paste it into an excel worksheet. I would
like it to keep looping through all of the text files in the folder until
all of the contents are pasted into one excel worksheet.

Any help would be greatly appreciated.

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Regards,

timmulla