Mac Sublime Text compile Source.cpp error //bin/bash: shell_session_update: command not found get the rvm version 1 Rango-MBP:~ Rango$ rvm -v make sure the version at least 1.26 above 1 2 Rango-MBP:~ Rango$ rvm -v rvm 1.27.0 (master) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/] then go ahead 1 Rango-MBP:~ Rango$ rvm get head wait Downloading… 1 2 3 4 5 6 7 8 Downloading https://get.