... Trac uses a directory structure and a database for storing project data. ... A new Trac environment is created using trac-admin's initenv : $ trac-admin /path/to/myproject initenv . ... For example, to connect to a PostgreSQL database on the same machine called trac , that allows access to the user johndoe with the password letmein , use: postgres://johndoe:letmein@localhost/trac . ... Generally, the following is sufficient to create a database user named tracuser , and a database named trac . ...