You can just list the files on the command line as multiple inputs and
pandoc will merge them automatically:

pandoc -o merged.ext chap-1.md chap-2.md chap-3.md

(where .ext is .html, .pdf or whatever.)

Tip: if the files have different names you can give them leading
zero-padded (all with the same number of digits) at the start of the file
names:

0010-foreword.md
0020-introduction.md
0030-problem.md
0040-this.md
...
0070-that.md
...
0100-conclusions.md

And then you should be able to just say

pandoc -o merged.ext *.md

and the files should be correctly ordered by the shell.

The point of "spacing out" the numbers as I did above is that if you add or
rearrange a file you can just change its number to something intermediate
instead of renumbering all the files; e.g. if you want to move the "that"
chapter to before the "this" chapter you just rename it 0035-that.md. I
realize that e.g. in a dissertation you are not as likely to rearrange
chapters, but e.g. in documentation, where I work nowadays, it happens with
some frequency.

I hope this is helpful.

/bpj

Den ons 18 jan. 2023 15:58Robert Kingett <kingettspeaks-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:

> I've tried to look online, for both a powershell command and a CMD
> command, possibly even a batch file, that would concatenate/merge multiple
> Markdown, .MD, files in a directory and then output it as one, merged,
> file, but nothing I've found works, so could someone point me in the right
> direction?
>
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