How to Find Postgres Log File and Postgres Data Directory from PSQL

If you want to find the location of your log file in Postgres, you'll need to hop into a Psql session.. psql dbname Then it's as simple as running.. show data_directory ; Which will output the data directory, in my case.. /Users/sean/Library/Application Support/Postgres/var-9.5 To see the file name run.. show log_filename ; There are other useful commands too. You can read more of them here https://www.postgresql.org/docs/9.3/static/runtime-config-logging.html