Trouble finding temporary files on Mac OSX Sierra

Hi, I encounter problems finding the Tiff’s stored under temporary files on my Mac. Following Rawpedia they must be find by typing Open /tmp or Open $TMPDIR in Terminal. That delivers no results (’ the file does not exist’). Someone with Mac-experience can help me out ? Thanks.

I’m looking in my /tmp folder (typed cd /tmp;ls -la in the terminal) and couldn’t find any tiffs.

Hi, solved, I think. Opening terminal you must type the following command : Open $TMPDIR.
Copy-pasting the command delivers no results. That was the problem.