tofrodos
http://www.thefreecountry.com/tofrodos/

DOS text files traditionally have CR/LF (carriage return/line feed) pairs as their new line delimiters while Unix text files traditionally have LFs (line feeds) to terminate each line.

tofrodos comprises two programs, "fromdos" and "todos", which convert text files to and from these formats. Use "fromdos" to convert DOS text files to the Unix format, and "todos" to convert Unix text files to the DOS format.