The error in its entirety reads:


  psql: could not connect to server: No such file or directory. Is the
  server running locally and accepting connections on Unix domain socket
  "/tmp/.s.PGSQL.5432"?


This is my second time setting up Postgresql via Homebrew on my Mac, and I have no clue what is going on. Previously, it had been working. At some point, I must've entered a command that messed things up. I'm not sure. Now, whenever I enter a SQL command from the command line, I receive the above message. I've run a command to check whether the server is running, and it apparently is not. If I attempt to start the server using


  $ postgres -D /usr/local/pgsql/data


I receive the following error:


  postgres cannot access the server configuration file
  "/usr/local/pgsql/data/postgresql.conf": No such file or directory


I've uninstalled and reinstalled Postgresql via Homebrew, but the problem persists. I'm completely at a loss as to how to get this working. Any help would be appreciated.

The answer is here.

Run this command to manually start the server:

pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

