Well that is one of the problems when suggesting shell snippets. There are many similar ways to do the same thing¹ but most have some caveats or work on one system but not the other. And when asking the AI there might be not enough context to provide a good answer.

In this case the AI answer might be somewhat better for Mac. On Linux I have more often manually installed lsof than ss (iproute2). Maybe Mac provides the similar command netstat which is yet another tool to check ports

  netstat -nltp | grep -P ':8000\b'

Regarding available tools. Another very common Bash question is how to get the directory the executed script is located. A common answer involves `readlink -f` which (as far as I know) does not work on Mac (without extra steps).

¹ How to get current users name. Maybe whoami or id -un or logname or echo $USER or who -m or who am i (learnt this last one just today; apparently works with any combination of two arguments after 'who')