In the article, the author seems to be switching their use of trailing slashes. At the top, (paraphrasing) it's rsync -arvuz /src/foo /dest/foo/ but at th

In the article, the author seems to be switching their use of trailing slashes. At the top, (paraphrasing) it's rsync -arvuz /src/foo /dest/foo/ but at the bottom it's rsync -arvuz /src/foo/ /dest/foo Which is correct?