BAT command to combine multiple files

[dekutoski]

I used this command years ago but am unable to find it. I was not the one who wrote it. I know it's a really simple code. If anyone knows what I am talking about and has this code, I would very much appreciate the help.

[dekutoski]

This code works GREAT!

@echo off>merge.txt
for /r /d %%a in (.) do copy/b merge.txt+"%%a\*.txt" GlAll.txt