how_to_install_jekyll.txt

Installing jekyll on mojave:

followed instructions here:
https://desiredpersona.com/install-jekyll-on-macos/

Differences from high sierra instructions:
1. mojave does not install macOS SDK headers. 
2. use of sudo not recommended - better to put ruby in a user dir and set the path.
there is more on that page about managing multiple versions of ruby.

also might be useful info here
https://github.com/jekyll/jekyll-help/issues/73

# command history:

open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
# <follow gui instructions >

# install homebrew (if you need it)
  /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

# install ruby
  brew install ruby
 
# check version
  ruby -v

# update bash profile with Ruby paths
  echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.bash_profile
  echo 'export PATH=$HOME/gems/bin:$PATH' >> ~/.bash_profile
  
# source it to relaunch terminal
   source ~/.bash_profile 

# check versions
  which ruby
  gem env
  

# install jekyll
   gem install bundler jekyll



# TO RUN JEKYLL:
cd bootstrap4-minimal
jekyll serve --incremental

# possible error, on Mac Mojave: "... Invalid US-ASCII character "\xE2" on line 6"
# run this cmd before jekyll serve:
export LANG=en_US.UTF-8



2022-05-11 addendum:
another good source for ruby info: 
https://stevemarshall.com/journal/why-i-use-chruby/