dos2unix: convert text files between DOS and UNIX formats

usage: dos2unix {-r} {-tws} [file1] [file_n...]

Parameters:
-r: reversed mode, that is convert the UNIX line ends (LF) to DOS (CRLF)
-tws: by default, the program removes the trailing white spaces (space, tab)
  at the line ends. This switches this mode out