I list the contents of the pub directory. 200 PORT command successful. Let's see if our game is in there. List the contents of the nethack directory. 200 PORT command successful.
Binaries are executables, so let's see if the game is in the binaries directory.
250 CWD command successful. List the contents of the binaries directory. 200 PORT command successful. Now we're getting closer. I change into the linux directory.