Hi HarmlessSaucer,
in the good old days when LINUX was young, no one ever would have thought of putting a space in a filename or parameter. It simply wasn't done—just as you'd never do that on a DOS system. Names were short, succinct and well-formed, like readme.txt.
Most of the Linux command-line utilities and the shells themselves have been designed based on the premise that a space delimits a field value rather than being an acceptable component of a name.
But if it is your will
Raspberry\ Pi
should do the trick.
