How can read from some files and write content of them with different form into files with same names : <p>I have some files with names f_1to2.txt, f_1to3.txt, f_2to1.txt, f_2to3.txt, ..., f_99to100.txt. I want to do something with the contents of these files and then write these changed files with the same names into another folder. How can I do it? thanks a lot.</p>
