gistfile1.txt

vagrant@contrib-jessie:~$ cd btest
vagrant@contrib-jessie:~/btest$ mkdir -p foo/bar/baz
vagrant@contrib-jessie:~/btest$ cd foo
vagrant@contrib-jessie:~/btest/foo$ echo "puts :hello_world" > test.rb
vagrant@contrib-jessie:~/btest/foo$ ruby test.rb
hello_world
vagrant@contrib-jessie:~/btest/foo$ bundle exec ruby test.rb
Could not locate Gemfile or .bundle/ directory
vagrant@contrib-jessie:~/btest/foo$ touch Gemfile
vagrant@contrib-jessie:~/btest/foo$ bundle exec ruby test.rb
hello_world
vagrant@contrib-jessie:~/btest/foo$ rm Gemfile
vagrant@contrib-jessie:~/btest/foo$ touch ../Gemfile
vagrant@contrib-jessie:~/btest/foo$ bundle exec ruby test.rb
hello_world