I went to the Jekyll website https://jekyllrb.com/docs/installation/ and read the pre-requisites
I ran each command line recommended to validate the correct prerequisites are installed
Installing Jekyll should be straight-forward if all requirements are met. Before you start, make sure your system has the following: GNU/Linux, Unix, or macOS Ruby version 2.2.5 or above, including all development headers (ruby installation can be checked by running ruby -v, development headers can be checked on Ubuntu by running apt list --installed ruby-dev) RubyGems (which you can check by running gem -v) GCC and Make (in case your system doesn't have them installed, which you can check by running gcc -v,g++ -v and make -v in your system's command line interface)
Then using command line I installed using Ruby Gem via the command
gem install Jekyll
When I did this I got the following error:
gem install jekyll
Fetching: public_suffix-3.0.2.gem (100%)
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.
My next step was to google "gem install jekyll you don't have write permissions" and I found an article on github recommending a different command line - "$ gem install --user-install --bindir ~/bin --no-document --pre --verbose Jekyll" which gave me a bash error of "command not found".
I then reached out to a friend @mention @davebeach with the error and we realized that out of the box Mac's come installed with Ruby but the permissions are locked down and I needed to give myself ownership of the directory so that the install could complete successfully The first thing I did was navigate to the directory giving me permission issues
cd /Library/Ruby/Gems/2.3.0
Then navigated "up" one level by typing the command
cd ..
then I typed
ls -al
the response was
drwxr-xr-x 3 root wheel 96 Jul 15 2017 .
drwxr-xr-x 4 root wheel 128 Jul 15 2017 ..
drwxr-xr-x 8 root wheel 256 Jul 15 2017 2.3.0
The result told me that I was not the owner of the "2.3.0" directory to complete the install, as well as the fact that I was in the root directory and not within my user directory so the next step was to enter the command
sudo chown christopheryork: 2.3.0
Then I entered my passowrd and then the command
ls -al
and the result was
drwxr-xr-x 3 root wheel 96 Jul 15 2017 .
drwxr-xr-x 4 root wheel 128 Jul 15 2017 ..
drwxr-xr-x 8 christopheryork wheel 256 Jul 15 2017 2.3.0
next I used the command
sudo chown christopheryork:staff 2.3.0
and then the command
ls -al
and the result was
drwxr-xr-x 3 root wheel 96 Jul 15 2017 .
drwxr-xr-x 4 root wheel 128 Jul 15 2017 ..
drwxr-xr-x 8 christopheryork staff 256 Jul 15 2017 2.3.0
Note the directory is now under my ownership
I next ran the command
gem install jekyll
and I got the error
Fetching: public_suffix-3.0.2.gem (100%)
ERROR: While executing gem ... (Errno::EACCES)
Permission denied @ rb_sysopen - /Library/Ruby/Gems/2.3.0/cache/public_suffix-3.0.2.gem
I then navigated back to the correct directory
cd /library/ruby/gems
I entered the command
sudo chown -R christopheryork:staff 2.3.0
Then I issued the command
gem install jekyll
and the result was
Done installing documentation for public_suffix, addressable, colorator, http_parser.rb, eventmachine, em-websocket, concurrent-ruby, i18n, rb-fsevent, ffi, rb-inotify, sass-listen, sass, jekyll-sass-converter, ruby_dep, listen, jekyll-watch, kramdown, liquid, mercenary, forwardable-extended, pathutil, rouge, safe_yaml, jekyll after 50 seconds 25 gems installed
I ended up figuring out that in order to install Jekyll, I had to install Ruby properly, and to do that I needed not to change permissions on the built in mac Ruby install, but to change my terminal from bash to zsh, ignore the native mac Ruby, use the Ruby I had installed via Homebrew, and properly and set the $PATH variable in ~/.zschrc ... and not only that, but I had to set that path using the proper syntax, which is not properly on the otherwise wonderful website Mac Install Guide run by Daniel Kehoe that helped me on my way.