Install jekyll as --user

gem install --user jekyll

add something like

# jekyll (gem install --user jekyll)

to ~/.bashrc. To test

which jekyll # should return something like:

When it complains about missing stuff

gem install --user jekyll-sitemap


p.s. To get ruby stuff, use something like

sudo apt install jekyll
sudo apt remove jekyll
about / github / jekyll

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