How to create a /not/empty text file with utf-8 encoding via cmd (without connecting external utilities)?

Question

Command line

Tried like this:

chcp 1251
cmd /d /u /c type d:\1251.txt > .tmp
chcp 65001
type .tmp > d:\utf8_out.txt
del .tmp

Nothing comes out. It just creates a .tmp (Unicode)..(

Answer 1

An empty text file cannot have an encoding in principle.
txt does not store encoding information at all. Notepad picks it up by analyzing the file usually.
Unicode encodings can write a BOM marker at the beginning of the file, but it will no longer be an empty file.

Answer 2

How to create an empty text file with utf-8 encoding via cmd (without connecting external utilities)?

An empty text file, by definition, has no encoding.

Answer 3

Something like this, replace d:\newfile.txt with the path to the file:

@echo -----BEGIN CERTIFICATE----- > %TEMP%\tmp64.txt
@echo 77u/YXNk >>%TEMP%\tmp64.txt
@echo -----END CERTIFICATE----- >>%TEMP%\tmp64.txt
certutil -decode %TEMP%\tmp64.txt %TEMP%\tmp.txt
copy %TEMP%\tmp.txt d:\newfile.txt