Can I use echo to generate an UTF-8 text file? For example if I want to generate a file that contains the character \"ę\"
echo \"abcd ę\" > out.txt
chcp 65001
as mention by @cuixiping is a good answer but it require to change cmd default font to Lucida Console for example, as you can read here: https://superuser.com/questions/237081/whats-the-code-page-of-utf-8#272184
and of course, as mentioned by @BearCode, the text should be in utf-8… in my case, with Vim under GNU/Linux with remote access, but notepad++ is right way too!