#contents *Prerequisite [#t7d95876] -Cent OS installation (You can refer [[HowToUse/CentOS/6.5]]) or -Ubuntu Server installation (You can refer [[HowToUse/UbuntuServer/14.04]]) *Install&Setup [#u882e485] **Cent OS [#c93f4d67] :Step.1|Install libyaml-devel and lib # yum install -y libyaml-devel libffi-devel :Step.2|Install RVM $ \curl -sSL https://get.rvm.io | bash -s stable When you encounter the error, follow the instruction in the stdout. **Ubuntu [#m2ffe48c] :Step.1|Install RVM $ curl -L https://get.rvm.io | bash -s stable If you encounter the error, follow the instruction in the stdout. *HowToUse [#m01e3b59] :Step.1| Load parameters following the instruction in stdout from instllation. (Cent OS) $ source ~/.rvm/scripts/rvm or $ source ~/.profile (Ubuntu) $ source ${HOME}/.rvm/scripts/rvm :Step.2|Check the installed Ruby $ rvm list known :Step.2|Install Ruby $ rvm install 2.1.3 :Step.3|Check the Ruby path is changed to the Ruby managed under RVM $ which ruby #ref(HowToUse_fig1.png,,500x365,) :Step.4|Switch the Ruby $ rvm use 2.1.3 $ ruby -v ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-linux] $ *Author [#b7d9902a] S.Yatsuzuka