以下环境以 Ubuntu 为例，如果环境为 Mac OS 则把 apt install 换成 brew install
Jekyll 依赖 Ruby 语言，需要先安装
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$ sudo apt install ruby
类似 pip 于 Python，RubyGems 是 Ruby 的包管理器，其终端命令为 gem。安装 Ruby 之后用 gem 直接安装 Jekyll 可能会报以下错误：
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$ sudo gem install jekyll
Fetching: public_suffix-3.1.1.gem (100%)
Successfully installed public_suffix-3.1.1
Fetching: addressable-2.6.0.gem (100%)
Successfully installed addressable-2.6.0
Fetching: colorator-1.1.0.gem (100%)
Successfully installed colorator-1.1.0
Fetching: http_parser.rb-0.6.0.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing jekyll:
ERROR: Failed to build gem native extension.
current directory: /var/lib/gems/2.5.0/gems/http_parser.rb-0.6.0/ext/ruby_http_parser
/usr/bin/ruby2.5 -r ./siteconf20190706-17669-1vutbo1.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h
extconf failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.5.0/gems/http_parser.rb-0.6.0 for inspection.
Results logged to /var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/http_parser.rb-0.6.0/gem_make.out
因此需安装 Ruby 的开发插件
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$ sudo apt-get install ruby`ruby -e 'puts RUBY_VERSION[/\d+\.\d+/]'`-dev
配置 Gem 国内加速源
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$ sudo gem sources -r https://rubygems.org/ -a https://gems.ruby-china.com/
安装 Jekyll
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$ sudo gem install jekyll
其次 Jekyll 还依赖 jekyll-paginate
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$ sudo gem install jekyll-paginate
所有配置完成后，终端移动到目标文件夹下启动服务即可
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$ jekyll serve
参考链接：