postgresql en mac

Terminal:
$ brew install postgresql

/usr/local/Cellar/postgresql/9.5.2

/usr/local/var/postgres

To have launchd start postgresql now and restart at login:
$ brew services start postgresql
$ brew services stop postgresql

$ initdb /usr/local/var/postgres -E utf8

$ sudo gem install lunchy
$ mkdir -p ~/Library/LaunchAgents
$ cp /usr/local/Cellar/postgresql/9.5.2/homebrew.mxcl.postgresql.plist ~/Library/LaunchAgents/


$ lunchy start postgres
$ lunchy stop postgres

$ psql -d postgres
$ create user postgres with superuser encrypted password 'gobierna';

$ nano /usr/local/var/postgres/postgresql.conf
$ nano /usr/local/var/postgres/pg_hba.conf