Quick reference on installing specific versions of rails on an “older” version of ubuntu without the need of having all packages in the ubuntu repositories. After doing so, you can continue to install redmine as described in http://www.redmine.org/projects/redmine/wiki/RedmineInstall This will fail if the environment is not set correctly – this helped me a lot: http://stackoverflow.com/questions/12127603/usr-bin-env-ruby-noexec-wrapper-fails-with-no-file-or-directory…