jekyll installation
https://jekyllrb.com/docs/step-by-step/01-setup/

1. After ruby is installed,install jekyll and bundler using gem command
  `gem install jekyll bundler`
2. Set the environment path of bundler and other plugins in environment path. Path to be added is 
  `/home/hpes/.local/share/gem/ruby/3.3.0/bin`
3. Edit the Gemfile in a text editor and add jekyll as a dependency:
`gem "jekyll"`
4. Now change the config path of bundle as it will use system environment ruby which wont be accessibe
  `bundle config path <path>` here `<path>` can be `/Documents/ruby` or any path owned by current user
5. run `bundle` : to install gem modules
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demo
1. Create a folder say `site` and cd into it
2. run `jekyll serve` to go to dev mode (to see live changes) and `jekyll build` to create optimised build
  also use this to refresh the browser too
  `jekyll serve --livereload` and other flags for different host and port are `--host` and `--port`