$ rails s
/home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/execjs-1.2.9/lib/execjs/runtimes.rb:47:in `autodetect': Could not find a JavaScript runtime. See
https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/execjs-1.2.9/lib/execjs.rb:5:in `<module:ExecJS>'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/execjs-1.2.9/lib/execjs.rb:4:in `<top (required)>'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/coffee-rails-3.1.1/lib/coffee-rails.rb:1:in `require'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/coffee-rails-3.1.1/lib/coffee-rails.rb:1:in `<top (required)>'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `require'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `each'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `block in require'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `each'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `require'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler.rb:122:in `require'
from /home/azart/my_app/config/application.rb:7:in `<top (required)>'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/railties-3.1.1.rc3/lib/rails/commands.rb:52:in `require'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/railties-3.1.1.rc3/lib/rails/commands.rb:52:in `block in <top (required)>'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/railties-3.1.1.rc3/lib/rails/commands.rb:49:in `tap'
from /home/azart/.rvm/gems/ruby-1.9.2-p290@my_app/gems/railties-3.1.1.rc3/lib/rails/commands.rb:49:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'