Installing jekyll on MacOS 10.13 High Sierra | Alexey Korepanov

TL;DR

curl -L https://get.rvm.io | bash -s stable
rvm install ruby-2.6.3
rvm use ruby-2.6.3
sudo gem install jekyll

Install the Ruby Version Manager rvm

curl -L https://get.rvm.io | bash -s stable

Install ruby 2.6.3 or higher:
```
rvm install ruby-2.6.3
```
Without this step you’ll get Undefined symbols for architecture i386 error later when installing jekyll.
Select installed version of ruby:
```
rvm use ruby-2.6.3
```
Install jekyll
```
sudo gem install jekyll
```
Note: you might need to launch a new teminal tab to make jekyll command available.
Now you can serve your static website locally:
```
jekyll serve --trace
```