Windows batch - concatenate multiple text files into one

Question

I need to create a script, which concatenates multiple text files into one. I know it\'s simple to use

type *.txt > merged.txt

But the require

Answer 1

I am reiterating some of the other points already made, but including a 3rd example that helps when you have files across folders that you want to concatenate.

Example 1 (files in the same folder):

copy file1.txt+file2.txt+file3.txt file123.txt

Example 2 (files in same folder):

type *.txt > combined.txt

Example 3 (files exist across multiple folders, assumes newfileoutput.txt doesn't exist):

for /D %f in (folderName) DO type %f/filename.txt >> .\newfileoutput.txt