chruby：未知 Ruby：ruby-2.2.0

Question

ruby-2.2.0有了chruby，为什么在工作中不会.ruby-version，而chruby ruby-2.2.0会呢？

% whoami
mark
% sudo su myapp
% cd /home/www/myapp/
% whoami
chruby: unknown Ruby: ruby-2.2.0
myapp
% cat .ruby-version
ruby-2.2.0
% which ruby
/usr/local/bin/ruby
% chruby ruby-2.2.0
% which ruby
/home/www/myapp/.rubies/ruby-2.2.0/bin/ruby 

Ruby on Rails 部署的完整记录：

https://gist.github.com/dt1973/7b99dfb75bd26e1e5ed7

Answer 1

简而言之，.ruby-version即2.2.0

echo 2.2.0 > .ruby-version