I have a long list of file names in a text file I need to rename to html files by adding .html at the end but it's just too laborious by hand

there are too many different names to do a replace and my brain melts at the idea of doing it by hand,

anyone know of anything that can automatically stick a .html at the end of every line? I can't seem to figure out how do it in word or anything I have. It's a silly thing but annoying.

Hi,

Very simple using Regex (Regular Expressions) Google Regex and you will find exactly what you want to do.

-Brian

okay, anything more specific on what command to use?