The Rails Port from GitHub - Installation Error


Could you give some advise what I do wrong? I have got blank Ubuntu server 12.04.3 and try to install The Rails follow by from GitHub. When I reach step with this command: $sudo bundle exec rake db:create I have recieved error: Couldn’t create database for {“adapter”=>“postgresql”, “encoding”=>“unicode”, … and so on… In Google search I have found recomendation like - put host: localhost and port: 5432 in config/database.yml. In my case it does not work. Have you any other advise or hints?

Any help will be apprecited.

I didn’t find the right solution from the Internet.

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Thank you.