如何测试Ruby脚本是否通过Bundler运行

Question

在Ruby脚本中，有没有办法测试当前进程是否已经通过Bundler启动 - 即通过bundle exec或binstub？

Answer 1

You could check defined?(Bundler) , but that will also be present if you require 'bundler' without having run bundle exec .

When you run inside bundle exec , there are a few ENV variables present that aren't otherwise. Notably, BUNDLE_GEMFILE and BUNDLE_BIN_PATH .

There are some more details in the Environment Modifications section of the bundle exec docs .