这几天有兴致研究了一些东西想更新下博客，但发现Jekyll不能运行，把过程中踩到的一些坑记录下，以便他人：

首先提示版本错误：

zsh: /usr/local/bin/jekyll: bad interpreter: /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin: no such file or directory

运行 ruby –version 查看系统ruby版本已经升级到了2.3.3，运行命令更新jekyll和bundler，因为新版macOS /usr/bin不能写，需要手动指定安装到/usr/local/bin目录

sudo gem install -n /usr/local/bin jekyll bundler

升级后，运行jekyll serve，又提示错误:

/Library/Ruby/Site/2.3.0/bundler/spec_set.rb:88:in `block in materialize’: Could not find public_suffix-2.0.4 > in any of the sources (Bundler::GemNotFound)
         from /Library/Ruby/Site/2.3.0/bundler/spec_set.rb:82:in `map!’
         from /Library/Ruby/Site/2.3.0/bundler/spec_set.rb:82:in `materialize’
         from /Library/Ruby/Site/2.3.0/bundler/definition.rb:170:in `specs’
         from /Library/Ruby/Site/2.3.0/bundler/definition.rb:237:in `specs_for’
         from /Library/Ruby/Site/2.3.0/bundler/definition.rb:226:in `requested_specs’
         from /Library/Ruby/Site/2.3.0/bundler/runtime.rb:108:in `block in definition_method’
         from /Library/Ruby/Site/2.3.0/bundler/runtime.rb:20:in `setup’
         from /Library/Ruby/Site/2.3.0/bundler.rb:107:in `setup’
         from /Library/Ruby/Gems/2.3.0/gems/jekyll-3.6.2/lib/jekyll/plugin_manager.rb:50:in `require_from_bundler’
         from /Library/Ruby/Gems/2.3.0/gems/jekyll-3.6.2/exe/jekyll:11:in `<top (required)>’
         from /usr/local/bin/jekyll:23:in `load’
         from /usr/local/bin/jekyll:23:in `<main>’

Google了一下没找到答案，看了下代码，觉得应该是_config.yml相关依赖库没升级造成的问题，运行命令升级依赖库：

bundle update

再次运行，能启动起来了，但有个警告：

Deprecation: The ‘gems’ configuration option has been renamed to ‘plugins’. Please update your config file accordingly.

打开_config.yml将gems修改为plugins，问题解决

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