Concatenate multiple files but include filename as section headers

Question

I would like to concatenate a number of text files into one large file in terminal. I know I can do this using the cat command. However, I would like the filename of each fi

Answer 1

Was looking for the same thing, and found this to suggest:

tail -n +1 file1.txt file2.txt file3.txt

Output:

==> file1.txt <==


==> file2.txt <==


==> file3.txt <==

If there is only a single file then the header will not be printed. If using GNU utils, you can use -v to always print a header.