You could have postgre installed on localhost with password (or without user or password seted after instalation) but if we are developing we really don't need password, so configuring postgre server without password for all your rails project is usefull.
| # Install apt-get packages: | |
| sudo apt-get install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion pkg-config | |
| # Install chruby: | |
| cd | |
| wget https://github.com/downloads/postmodern/chruby/chruby-0.2.3.tar.gz | |
| tar -xzvf chruby-0.2.3.tar.gz | |
| cd chruby-0.2.3 | |
| sudo make install |