1. Requirements
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$ sudo apt-get install ruby ruby-dev build-essential
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# It is best to avoid installing Ruby Gems as the root user.
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# Therefore, we need to set up a gem installation directory for your user account.
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# The following commands will add environment variables
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# to your ~/.bashrc file
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# to configure the gem installation path.
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# Run them now:
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$ echo '# Install Ruby Gems to ~/gems' >> ~/.bashrc
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$ echo 'export GEM_HOME=$HOME/gems' >> ~/.bashrc
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$ echo 'export PATH=$HOME/gems/bin:$PATH' >> ~/.bashrc
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$ source ~/.bashrc
2. Install with RubyGems
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$ gem install jekyll bundler # 用bundler 管理 gem 安装及依赖
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...
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Fetching: listen-3.0.8.gem (100%)
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listen's executable "listen" conflicts with sass-listen
Overwrite the executable? [yN] y
Successfully installed listen-3.0.8
...
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3. Quick-start
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$ mkdir jekyll; cd $_
$ jekyll new myblog; cd $_
$ bundle exec jekyll serve
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4.
Upgrade Jekyll
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# To find the currently installed version of Jekyll,
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# run one of these commands:
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$ jekyll --version
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$ gem list jekyll
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# You can use RubyGems to find the current version of Jekyll.
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# Another way to check if you have the latest version is
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# to run the command
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$ gem outdated
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# This will provide a list of all the gems on your system that need to be updated.
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# If you aren’t running the latest version, run this command:
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$ bundle update jekyll
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# Alternatively, if you don’t have Bundler installed run:
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$ gem update jekyll
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# To upgrade to latest Rubygems, run:
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$ sudo gem update --system
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Reference：
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