Copy, Move and Rename
Your inbox directory is a mess. Tidy it up with cp and mv. Use ls (or tree) often to see what you've done.
How it works: the terminal below is a real Linux machine running in your browser. Click it and type. Tasks tick themselves off as you complete them; questions are answered in the box under each task. Press Reset any time for a fresh machine.
Hints
Paths are relative to where you are. Starting in your home folder, the report is inbox/report.txt.
Solution explanation
cp leaves the original where it was; mv doesn't. Renaming is a mv within the same directory. mv accepts several files when the last argument is a directory (mv inbox/*.jpg pictures/ works too). Directories need cp -r.
Show solution
cp inbox/report.txt backup/
mv inbox/notes-draft.txt inbox/notes.txt
mv inbox/photo1.jpg inbox/photo2.jpg pictures/
cp -r projects/game backup/game