How to run or setup rails3?

Have 2 ruby installations 1.8 and 1.9.1, have 2 gems. From "gem1.9.1 inst开发者_高级运维all rails" installed rails3 to my system, but don't have "rails" in my "path".

How can i get rails to launch from entering rails in terminal?

EDIT

removed all ruby and ruby-gems from my system (Ubuntu 10.10) and installed ruby1.9.1 - it came with gems1.9.1 and then installed

gem1.9.1 install rails

How do i make "rails" run the installed gem rails?

EDIT 2

Found it!

The rails was installed in /var/lib/gems/1.9.1/bin/rails just had to add a alias "rails" to it in system $PATH

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How did you install your rubies? I'd strongly suggest to use a version manager like rvm, otherwise you're asking for trouble.

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You should be specific about your system environment. In windows when you install ruby, you just have RUBY_HOME/bin in your path. Whenever you install rails by gem install rails , it automatically deploy executable files in RUBY_HOME/bin folder. So that you can directly execute that command.