Modern operating systems all support file names with space characters (we are not in DOS era any more). Generally when you type a file name in command line, you can type the first few characters and press TAB to let the system auto-complete the file name. You can’s directly type a file name with space characters without escape characters — otherwise it would think the spaces separate command line arguments and will not treat them as part of the file name. The auto-complete will add escape characters so that it recognizes these are space characters in the file name. Or you can put the entire file name in quotes. We assume that anyone who uses the Linux version would know these basics. If you don’t you can always google the question to find out (such as Google “how to type file name with space in Linux”).