of the text (e.g., a book, code, a game translation)?
: You have a 347KB RAR file containing multiple text pieces and need to merge them into one long document.
If "347K rar" is the name of a specific download you're searching for (e.g., from a site like Aminet or a compression challenge forum), please clarify:
Navigate to the folder and run: cat *.txt > combined_text.txt
(e.g., a specific forum like ENCODE.SU or a GitHub repository). Which of these fits what you're trying to do?
If you are trying to from a RAR into one "long text" document, here is the most common way to do it: How to Combine Text Files into One