Usage:                                                        
    to-unix.sh [-h] SOURCE DESTINATION                        

    The '-h' argument shows this message and then exits.

    If SOURCE is a file and DESTINATION is a file (or if DESTINATION does not
    exist), then SOURCE will be copied to DESTINATION using Unix-style line  
    terminators.                                                             

    If SOURCE is a directory and DESTINATION is a directory, then all of the
    files in SOURCE will be copied into the DESTINATION directory using
    Unix-style line terminators.

    If SOURCE is a file and DESTINATION is a directory, then SOURCE will be
    copied to DESTINATION/SOURCE using Unix-style line terminators.

    It is an error to have SOURCE as a directory and DESTINATION as a file.

    Examples:

        1. Copy 'file.txt' to 'file2.txt' using Unix-style line terminators
           in 'file2.txt':

            to-unix.sh file.txt file2.txt

        2. Copy all files in the existing 'Windows' directory to the 'Unix'
           directory (which may or may not exist) using Unix-style line
           terminators in the destination files:

            to-unix.sh Windows Unix