macOS 10.13 安装和使用 Capistrano 自动部署

1，要用 sudo 管理员身份，不然提示没有权限，系统默认已经是 Ruby Gem 环境：

$ sudo gem install capistrano

2，初始化

$ capify .
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Capistrano 3.x is incompatible with Capistrano 2.x.
This command has become `cap install` in Capistrano 3.x
For more information see http://www.capistranorb.com/
--------------------------------------------------------------------------------
$ sudo cap install
mkdir -p config/deploy
create config/deploy.rb
create config/deploy/staging.rb
create config/deploy/production.rb
mkdir -p lib/capistrano/tasks
Capified
$ tree

参考：http://www.361way.com/capistrano-deploy/3563.html