After downloading the stable version from here
Generic Linux on x86 [help] 64-bit (GPG)
use: tar -xvzf julia-1.6.1-linux-x86_64.tar.gz to unzip.
Then move it to /opt folder using:
sudo mv julia-1.6.1/ /opt/
Finally, create a symbolic link to the Julia binary file.
sudo ln -s /opt/julia-1.6.1/bin/julia /usr/local/bin/julia
Now Julia is already installed and working in your machine. Let’s now add it to Jupyter.