Postgresql / pg veritabanına bağlanma
#psql -h <host> -p <port> -d <db> -U <user>
psql -h localhost -p 5432 -d <db> -U <user>
postgresql veritabanına bağlan
psql -d geo -h 192.168.1.12 -p 5432 -U supervisor
// geo is a database and supervisor is a user
// Once on postgres you can change the database by typing
\c postgres