#### HOW TO START AND STOP POSTGRESQL SERVER - https://tableplus.com/blog/2018/10/how-to-start-stop-restart-postgresql-server.html - start `sudo service postgresql start` - stop `sudo service postgresql stop` #### CHECK IF PORT IS IN USE - https://www.cyberciti.biz/faq/unix-linux-check-if-port-is-in-use-command/ - check what ports are used `sudo lsof -i -P -n`