rvm
https://www.digitalocean.com/community/tutorials/how-to-install-ruby-on-rails-on-centos-6-with-rvm
altinstall
https://github.com/h2oai/h2o-2/wiki/Installing-python-2.7-on-centos-6.3.-Follow-this-sequence-exactly-for-centos-machine-only

sickrage install:

https://github.com/SiCKRAGETV/sickrage-issues/wiki/Sickrage-installation-CENTOS-6