将文本文件复制到一个包含文件名的文件中

Question

From the Windows command prompt it's possible to collect all text files into one file using

copy *.txt all_text_files.txt

Is it possible to add the name of each file added in front of the file in question? In my example I have two text files a & b.

a.txt consists of one line:

Cheese

b.txt also consists of one line:

Monkeys

The new file would be:

a.txt
Cheese
b.txt
Monkeys

Answer 1

If you write it directly in the command line, this should work. If you want to make a script I believe you need to put double %

for %f in (*.txt) do (
    echo "%f"
    type "%f"
) > all_text_files.txt

Answer 2

type *.txt >allfiles.out 2>&1
ren allfiles.out allfiles.txt

type types all matching files. The file contents goes to STDOUT, the filenames are printed to STDERR. So just redirect both to the new file. Choose a different extension to avoid recursive handling.