Quite surprisingly for me, I did not find valuable information on how to convert plain TeX files to LaTeX documents. There is a TeX.SX question, but it was answered with a particular solution.
I have a larger number of simple TeX files with equations which I would like to convert to LaTeX articles. The need arises because I want to merge the documents with others which are based on LaTeX. The files do not contain any images and no complicated layouts.
Is there a simple but stable conversion tool somewhere out there which helps me to achieve this?
There seems to be a tool called
tex2latex but I only found a windows binary. I work on Ubuntu and my LaTeX distribution is TeX Live.