Re: using terminal to open .jpg with spaces in name
You can also drag and drop files to the terminal to fill in their file path. That saves you having to type such a long filename! It also ensures that the spaces in the filename are escaped out (Tux\ Happy\ Holidays etc) or that the filename is fully quoted ("Tux Happy Holidays" etc).
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.