char ** parseCommandLine(string aCommandLine)

This function takes the input parameter and splits that string up into an array of component tokens that are returned to the caller. As this is assumed to be a Linux command line (for example, from the terminal application), you need to be able to handle certain special cases: (1) file redirection with the characters, (2) file redirection with the <<, and (3) the pipe is the only other character used as a seperator. character |. Otherwise, you may assume that the any white-space character is a separator. You function needs to return a pointer to a dynamically allocated array of C-strings (remembering that a double-pointer is C++ is another way to say that statement).